List of coupled cousins

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See also: Cousin marriage

This is a list of prominent individuals who have been romantically or maritally coupled with a cousin.

Notable commoners[edit]

A B C D E F G H I
  • Isaac was married to his first cousin once removed, Rebecca (in Judeo-Christian mythology)
J K L M N O P R S T U V W

Royalty[edit]

Europe[edit]

The royal couples listed below are but a sampling of the innumerable marriages that have occurred between cousins, of varying degrees, from royal or noble houses. Such royal intermarriages have been common, as it has generally been deemed inappropriate for royals to marry commoners.

The constitutional interest that has attached to royals' marital status, and the fact that genealogical records for royal houses tend to be more readily available than those for commoners, make royals' bloodlines generally better known than those of commoners.

Person Spouse Married Year Relationship Common ancestor(s)
Prince Adalbert of Bavaria Countess Augusta von Seefried auf Buttenheim 12 June 1919 1919 Second cousins once removed Ludwig I of Bavaria
Prince Adalbert of Prussia Princess Adelaide of Saxe-Meiningen 3 August 1914 1914 Second cousins Ernst I, Prince of Hohenlohe-Langenburg
Adolf, Duke of Holstein-Gottorp Christine of Hesse 17 December 1564 1564 Second cousins once removed Eric II, Duke of Pomerania
Adolf I, Prince of Schaumburg-Lippe Princess Hermine of Waldeck and Pyrmont 25 October 1844 1844 First cousins George I, Prince of Waldeck and Pyrmont
Adolf Frederick, King of Sweden Louisa Ulrika of Prussia 29 August 1744 1744 Third cousins George, Duke of Brunswick-Lüneburg
Duke Adolf Friedrich of Mecklenburg Princess Viktoria Feodora of Reuss-Schleiz 24 April 1917 1917 Fourth cousins Frederick II Eugene, Duke of Württemberg
Adolph, Landgrave of Hesse-Philippsthal-Barchfeld Princess Louise of Saxe-Meiningen 18 October 1781 1781 First cousins once removed Philip, Landgrave of Hesse-Philippsthal
Adolphe, Grand Duke of Luxembourg Grand Duchess Elizabeth Mikhailovna of Russia
(first wife)
31 January 1844 1844 Second cousins once removed Charles II, Grand Duke of Mecklenburg-Strelitz
Adolphe, Grand Duke of Luxembourg Princess Adelheid-Marie of Anhalt-Dessau
(second wife)
23 April 1851 1851 Fourth cousins Louis VIII, Landgrave of Hesse-Darmstadt
Prince Adolphus, Duke of Cambridge Princess Augusta of Hesse-Kassel 1 June 1818 1818 Second cousins George II of Great Britain
Adolphus Frederick II, Duke of Mecklenburg-Strelitz Princess Maria of Mecklenburg-Güstrow 1684 1684 First cousins once removed Johann VII, Duke of Mecklenburg
Adolphus Frederick III, Duke of Mecklenburg-Strelitz Princess Dorothea of Schleswig-Holstein-Sonderburg-Plön 16 April 1709 1709 Third cousins Adolf, Duke of Holstein-Gottorp
Adolphus Frederick V, Grand Duke of Mecklenburg-Strelitz Princess Elisabeth of Anhalt April 17, 1877 1877 Second cousins once removed Charles II, Grand Duke of Mecklenburg-Strelitz
Afonso, Prince of Portugal Isabella of Aragon, Queen of Portugal 1490 1490 Second cousins John, Constable of Portugal
Afonso II of Portugal Urraca of Castile, Queen of Portugal 1206 1206 Second cousins once removed Ramon Berenguer III, Count of Barcelona and Douce I, Countess of Provence
Afonso III of Portugal Matilda II, Countess of Boulogne
(first wife)
1239 1239 Third cousins once removed Fulk, King of Jerusalem
Afonso III of Portugal Beatrice of Castile
(second wife)
1253 1253 First cousins twice removed Alfonso VIII of Castile
Afonso IV of Portugal Beatrice of Castile 12 September 1309 1309 Half-first cousins once removed Alfonso X of Castile
Afonso V of Portugal Isabel of Coimbra
(first wife)
6 May 1447 1447 First cousins John I of Portugal
Afonso V of Portugal Joanna la Beltraneja
(second wife)
10 May 1475 1475 First cousins once removed[69] Ferdinand I of Aragon
Afonso of Portugal, Lord of Portalegre Violante Manuel 1287 1287 First cousins once removed Ferdinand III of Castile
Agrippina the Elder Germanicus between 5 BC and 1 BC -1 Second cousins Gaius Octavius and Atia Balba Caesonia
Agrippina the Younger Gnaeus Domitius Ahenobarbus 28 28 First cousins once removed Mark Antony and Octavia the Younger
Prince Aimone, Duke of Apulia Princess Olga, Duchess of Apulia 16 September 2008 2008 Second cousins (through Prince Jean, Duke of Guise); second cousins once removed (through George I of Greece) Prince Jean, Duke of Guise; George I of Greece
Albert of Saxony Carola of Vasa 18 June 1853 1853 Second cousins Charles Louis, Hereditary Prince of Baden
Prince Albert of Saxe-Altenburg Princess Marie of Prussia
(first wife)
6 May 1885 1885 Second cousins once removed Charles II, Grand Duke of Mecklenburg-Strelitz
Prince Albert of Saxe-Altenburg Duchess Helene of Mecklenburg-Strelitz
(second wife)
13 December 1891 1891 Second cousins Charles II, Grand Duke of Mecklenburg-Strelitz
Prince Albert of Prussia Princess Marianne of the Netherlands 14 September 1830 1830 First cousins Frederick William II of Prussia
Prince Albert of Prussia Princess Marie of Saxe-Altenburg 9 April 1873 1873 Second cousins once removed Frederick William II of Prussia
Albert, 8th Prince of Thurn and Taxis Archduchess Margarethe Klementine of Austria 15 July 1890 1890 Fourth cousins Charles Alexander, Duke of Württemberg
Albert I of Belgium Elisabeth of Bavaria, Queen of Belgium 2 October 1900 1900 Third cousins (though Charles Louis, Hereditary Prince of Baden); Fourth cousins (through Charles III of Spain) Charles Louis, Hereditary Prince of Baden; Charles III of Spain
Albert V, Duke of Bavaria Archduchess Anna of Austria July 4, 1546 1546 Second cousins once removed Frederick III, Holy Roman Emperor
Albert VII, Archduke of Austria Isabella Clara Eugenia 18 April 1599 1599 First cousins Charles V, Holy Roman Emperor
Albert, Duke of Prussia Dorothea of Denmark, Duchess of Prussia
(first wife)
12 February 1526 1526 Second cousins once removed; third cousins Frederick I, Elector of Brandenburg; Frederick I, Elector of Saxony
Albert, Duke of Prussia Anna Marie of Brunswick-Lüneburg
(second wife)
1550 1550 Half-first cousins twice removed Albrecht III Achilles, Elector of Brandenburg
Albert Casimir, Duke of Teschen Maria Christina, Duchess of Teschen 8 April 1766 1766 Second cousins Leopold I, Holy Roman Emperor
Albrecht, Duke of Bavaria Countess Maria Draskovich of Trakostjan 3 September 1930 1930 Fourth cousins once removed Leopold II, Holy Roman Emperor
Albrecht, Duke of Württemberg Archduchess Margarete Sophie of Austria 24 January 1893 1893 Half-second cousins once removed Maximilian I Joseph of Bavaria
Alexander I of Scotland Sybilla of Normandy 1107 1107 Sixth cousins Hugh II, Count of Nordgau
Alexander I of Russia Louise of Baden 28 September 1793 1793 Fourth cousins Albert II, Margrave of Brandenburg-Ansbach
Alexander II of Russia Marie of Hesse and by Rhine 16 April 1841 1841 Second cousins once removed Louis IX, Landgrave of Hesse-Darmstadt
Alexander II of Scotland Joan of England, Queen of Scotland
(first wife)
21 June 1221 1221 Third cousins Henry I of England
Alexander II of Scotland Marie de Coucy
(second wife)
15 May 1239 1239 Third cousins once removed Hugh, Count of Vermandois
Alexander III of Scotland Margaret of England
(first wife)
26 December 1251 1251 Fourth cousins Henry I of England
Alexander III of Scotland Yolande of Dreux, Queen of Scotland
(second wife)
15 October 1285 1285 Fourth cousins once removed Robert I, Count of Dreux
Alexander III of Russia Dagmar of Denmark 9 November 1866 1866 Half-fifth cousins Adolphus Frederick II, Duke of Mecklenburg-Strelitz
Prince Alexander of Teck Princess Alice of Albany St George's Chapel, Windsor, 10 February 1904 1904 Second cousins once removed George III of the United Kingdom
Alexander, Crown Prince of Yugoslavia Princess Maria da Glória, Duchess of Segorbe 1 July 1972 1972 Fifth cousins once removed Francis, Duke of Saxe-Coburg-Saalfeld
Alexander, Margrave of Meissen Princess Gisela of Bavaria 3 April 1987 1987 Half-fourth cousins Leopold II, Grand Duke of Tuscany
Duke Alexander of Württemberg Princess Marie of Orléans 18 October 1837 1837 Fourth cousins Louis Rudolph, Duke of Brunswick-Lüneburg
Alexander Farnese, Duke of Parma Infanta Maria of Guimarães November 11, 1565 1565 Second cousins once removed Ferdinand II of Aragon and Isabella I of Castile
Alexander Karl, Duke of Anhalt-Bernburg Princess Friederike of Schleswig-Holstein-Sonderburg-Glücksburg 30 October 1834 1834 Second cousins Frederick II, Landgrave of Hesse-Kassel
Grand Duke Alexander Mikhailovich of Russia Grand Duchess Xenia Alexandrovna of Russia 6 August 1894 1894 First cousins once removed Nicholas I of Russia
Duke Alexander Petrovich of Oldenburg Princess Eugenia Maximilianovna of Leuchtenberg 19 January 1868 1868 Second cousins Paul I of Russia
Alexis, Landgrave of Hesse-Philippsthal-Barchfeld Princess Louise of Prussia 27 June 1854 1854 Fifth cousins twice removed Augustus the Younger, Duke of Brunswick-Lüneburg
Alexis, Prince of Bentheim and Steinfurt Princess Pauline of Waldeck and Pyrmont 7 May 1881 1881 Fifth cousins thrice removed Ernest I, Duke of Saxe-Gotha
Prince Alfons of Bavaria Louise d'Orléans 15 April 1891 1891 Second cousins Maximilian I Joseph of Bavaria
Alfonso the Battler Urraca of León 1109 1109 Half-second cousins Sancho III of Pamplona
Alfonso II d'Este, Duke of Ferrara Archduchess Barbara of Austria
(second wife)
5 December 1565 1565 Third cousins Gaston IV, Count of Foix and Eleanor of Navarre
Alfonso II d'Este, Duke of Ferrara Margherita Gonzaga, Duchess of Ferrara
(third wife)
24 February 1579 1579 Third cousins once removed Gaston IV, Count of Foix and Eleanor of Navarre
Alfonso IV of Aragon Eleanor of Castile 5 February 1329 1329 First cousins once removed Peter III of Aragon
Alfonso V of Aragon Maria of Castile, Queen of Aragon 12 June 1415 1415 First cousins John I of Castile
Alfonso VIII of Castile Eleanor of England, Queen of Castile 17 September 1177 1177 Fourth cousins Robert I, Duke of Burgundy
Alfonso IX of León Theresa of Portugal, Queen of León
(first wife)
15 February 1191 1191 First cousins Afonso I of Portugal
Alfonso IX of León Berengaria of Castile
(second wife)
17 December 1197 1197 First cousins once removed Alfonso VII of León
Alfonso X of Castile Violant of Aragon January 1249 1249 Third cousins Alfonso VII of León
Alfonso XI of Castile Constanza Manuel
(first wife)
28 November 1325 1325 Second cousins once removed Ferdinand III of Castile
Alfonso XI of Castile Maria of Portugal
(second wife)
1328 1328 Double first cousins Sancho IV of Castile; Denis of Portugal
Alfonso XII of Spain Mercedes of Orléans
(first wife)
Atocha, Madrid, 23 January 1878 1878 First cousins Ferdinand VII of Spain
Alfonso XII of Spain Archduchess Maria Christina of Austria
(second wife)
Basilica of Atocha, Madrid, 29 November 1879 1879 Third cousins Charles III of Spain
Prince Alfonso, Count of Caserta Princess Maria Antonietta of Bourbon-Two Sicilies 8 June 1868 1868 First cousins Francis I of the Two Sicilies
Infante Alfonso, Duke of Calabria Princess Alicia of Bourbon-Parma 16 April 1936 1936 Double second cousins Ferdinand II of the Two Sicilies; Archduke Karl Ferdinand of Austria
Infante Alfonso Carlos, Duke of San Jaime Infanta Maria das Neves of Portugal 26 April 1871 1871 First cousins once removed John VI of Portugal
Alfred, Duke of Saxe-Coburg and Gotha Grand Duchess Maria Alexandrovna of Russia Winter Palace, St. Petersburg, 23 January 1874 1874 Third cousins once removed Duke Charles Louis Frederick of Mecklenburg
Prince Alfred of Liechtenstein Princess Henriette of Liechtenstein 26 April 1865 1865 First cousins Johann I Joseph, Prince of Liechtenstein
Alois, Hereditary Prince of Liechtenstein Duchess Sophie in Bavaria St. Florin's, Vaduz, 3 July 1993 1993 Fifth cousins once removed Maximilian I Joseph of Bavaria
Alois-Konstantin, 9th Prince of Löwenstein-Wertheim-Rosenberg Princess Anastasia of Prussia 8 October 1965 1965 Fourth cousins once removed Karl Ludwig, Prince of Hohenlohe-Langenburg
Prince Amedeo, Duke of Aosta Princess Anne of Orléans 5 November 1927 1927 First cousins Prince Philippe, Count of Paris
Prince Amedeo, Duke of Aosta Princess Claude of Orléans 22 July 1964 1964 Second cousins Prince Philippe, Count of Paris
Prince Amedeo of Belgium, Archduke of Austria-Este Nob. Elisabetta Maria Rosboch von Wolkenstein 5 July 2014 2014 Distant cousins Giuseppe Tiberio Ruffo, Count of Sinopoli; Franz Albrecht I, Prince of Oettingen-Spielberg
Amadeus VIII, Duke of Savoy Mary of Burgundy, Duchess of Savoy 30 October 1393 1393 First cousins once removed John II of France
Amadeus IX, Duke of Savoy Yolande of Valois 1452 1452 Third cousins John II of France
Andreas, Prince of Leiningen Princess Alexandra of Hanover 5 October 1981 1981 Double fourth cousins Queen Victoria; Joseph, Duke of Saxe-Altenburg
Prince Andrew of Greece and Denmark Princess Alice of Battenberg 6 October 1903 1903 Fourth cousins Frederick William II of Prussia
Prince Andrew of Yugoslavia Princess Christina Margarethe of Hesse
(first wife)
2 August 1956 1956 Third cousins; third cousins once removed Queen Victoria
Prince Andrew of Yugoslavia Princess Kira of Leiningen
(second wife)
18 September 1963 1963 Second cousins Alfred, Duke of Saxe-Coburg and Gotha
Anne, Queen of Great Britain Prince George of Denmark 28 July 1683 1683 Second cousins once removed Frederick II of Denmark
Anne of York, Duchess of Exeter Henry Holland, 3rd Duke of Exeter 30 July 1447 1447 Half-second cousins John of Gaunt
Anthony of Saxony Princess Maria Carolina of Savoy
(first wife)
29 September 1781 1781 Fourth cousins Victor Amadeus I, Duke of Savoy
Anthony of Saxony Maria Theresa of Austria
(second wife)
8 September 1787 1787 First cousins once removed Augustus III of Poland
Duke Anthony Ulrich of Brunswick Grand Duchess Anna Leopoldovna of Russia 3 July 1739 1739 Third cousins once removed Johann VII, Duke of Mecklenburg
Antoine, Duke of Lorraine Renée of Bourbon 26 June 1515 1515 Third cousins John I, Duke of Bourbon
Antoine, Duke of Montpensier Infanta Luisa Fernanda, Duchess of Montpensier 10 October 1846 1846 First cousins once removed Ferdinand I of the Two Sicilies
Prince Antoine of Bourbon-Two Sicilies Duchess Elisabeth of Württemberg 8 July 1958 1958 First cousins once removed Prince Alfonso, Count of Caserta
Archduke Anton of Austria Princess Ileana of Romania 26 July 1931 1931 Fourth cousins John VI of Portugal
Anton-Günther, Duke of Oldenburg Princess Ameli of Löwenstein-Wertheim-Freudenberg 7 August 1951 1951 Fifth cousins once removed Frederick II, Landgrave of Hesse-Kassel
Anton Ulrich, Duke of Saxe-Meiningen Princess Charlotte Amalie of Hesse-Philippsthal 26 September 1750 1750 Second cousins twice removed Johann II, Duke of Saxe-Weimar
Infante Antonio, Duke of Galliera Infanta Eulalia of Spain 6 March 1886 1886 First cousins Ferdinand VII of Spain
Prince Antônio of Orléans-Braganza Princess Christine de Ligne 25 September 1981 1981 Fourth cousins once removed John VI of Portugal
Antonio Farnese, Duke of Parma Enrichetta d'Este 5 February 1728 1728 First cousins Francesco I d'Este, Duke of Modena
Infante Antonio Pascual of Spain Infanta María Amalia of Spain 25 August 1795 1795 First cousins once removed[70] Philip V of Spain
Prince Aribert of Anhalt Princess Marie Louise of Schleswig-Holstein 6 July 1891 1891 Fourth cousins Duke Charles Louis Frederick of Mecklenburg
Arthur II, Duke of Brittany Marie, Viscountess of Limoges
(first wife)
1275 1275 Third cousins Robert II, Count of Dreux
Arthur II, Duke of Brittany Yolande of Dreux, Queen of Scotland
(second wife)
May 1294 1294 Third cousins Robert II, Count of Dreux
Arthur, Prince of Wales Catherine of Aragon 14 November 1501 1501 Third cousins once removed (through John of Gaunt, 1st Duke of Lancaster);
Double fourth cousins (through Peter of Castile)
John of Gaunt, 1st Duke of Lancaster; Peter of Castile
Prince Arthur, Duke of Connaught and Strathearn Princess Louise Margaret of Prussia St. George's Chapel, Windsor Castle, 13 March 1879 1879 Third cousins once removed Duke Charles Louis Frederick of Mecklenburg
Prince Arthur of Connaught Princess Alexandra, Duchess of Fife Chapel Royal, St. James's Palace, 15 October 1913 1913 First cousins once removed Queen Victoria
Prince August, Duke of Dalarna Princess Therese of Saxe-Altenburg 16 April 1864 1864 Third cousins Prince George William of Hesse-Darmstadt
Prince August of Saxe-Coburg and Gotha Princess Clémentine of Orléans 20 April 1843 1843 Fourth cousins Louis Rudolph, Duke of Brunswick-Lüneburg
Prince August Leopold of Saxe-Coburg and Gotha Archduchess Karoline Marie of Austria 30 May 1894 1894 Second cousins Francis I of the Two Sicilies
Prince August Wilhelm of Prussia Princess Alexandra Victoria of Schleswig-Holstein-Sonderburg-Glücksburg 22 October 1908 1908 First cousins Frederick VIII, Duke of Schleswig-Holstein
Augustus, Duke of Saxe-Gotha-Altenburg Duchess Louise Charlotte of Mecklenburg-Schwerin
(first wife)
21 October 1797 1797 Second cousins Frederick II, Duke of Saxe-Gotha-Altenburg
Augustus, Duke of Saxe-Gotha-Altenburg Princess Karoline Amalie of Hesse-Kassel
(second wife)
24 April 1802 1802 Fourth cousins John George I, Duke of Saxe-Eisenach
Augustus, Grand Duke of Oldenburg Princess Adelheid of Anhalt-Bernburg-Schaumburg-Hoym
(first wife)
24 July 1817 1817 Fourth cousins George I of Great Britain
Augustus, Grand Duke of Oldenburg Princess Ida of Anhalt-Bernburg-Schaumburg-Hoym
(second wife)
24 June 1825 1825 Fourth cousins George I of Great Britain
Augustus, Grand Duke of Oldenburg Princess Cecilia of Sweden
(third wife)
5 May 1831 1831 Second cousins once removed Christian August of Holstein-Gottorp, Prince of Eutin
Augustus, Elector of Saxony Anne of Denmark, Electress of Saxony 7 October 1548 1548 Second cousins once removed Eric II, Duke of Pomerania
Augustus II the Strong Christiane Eberhardine of Brandenburg-Bayreuth 20 January 1693 1693 Second cousins Christian, Margrave of Brandenburg-Bayreuth
Augustus III of Poland Maria Josepha of Austria 20 August 1719 1719 Second cousins once removed George, Duke of Brunswick-Lüneburg
Prince Augustus Ferdinand of Prussia Margravine Elisabeth Louise of Brandenburg-Schwedt 27 September 1755 1755 Second cousins[70] Frederick William, Elector of Brandenburg
Prince Augustus William of Prussia Duchess Luise of Brunswick-Wolfenbüttel 6 January 1742 1742 Fourth cousins once removed Ernest I, Duke of Brunswick-Lüneburg
Prince Axel of Denmark Princess Margaretha of Sweden 22 May 1919 1919 First cousins once removed Christian IX of Denmark
Prince Benedetto, Duke of Chablais Maria Anna of Savoy, Duchess of Chablais 19 March 1775 1775 Second cousins once removed[69] Philippe I, Duke of Orléans
Bernhard II, Duke of Saxe-Meiningen Princess Marie Frederica of Hesse-Kassel 23 March 1825 1825 Third cousins once removed Louis Crato, Count of Nassau-Saarbrücken
Bernhard III, Duke of Saxe-Meiningen Princess Charlotte of Prussia 18 February 1878 1878 Second cousins Frederick William III of Prussia
Prince Bernhard of Saxe-Weimar-Eisenach Princess Ida of Saxe-Meiningen 30 May 1816 1816 Fourth cousins once removed William, Duke of Saxe-Weimar
Berthold, Margrave of Baden Princess Theodora of Greece and Denmark 17 August 1931 1931 Second cousins Christian IX of Denmark
Boris III of Bulgaria Giovanna of Italy 25 October 1930 1930 Fourth cousins once removed Francis I, Holy Roman Emperor and Maria Theresa
Caligula Lollia Paulina 38 38 Second cousins once removed Drusus Claudius Nero I
Prince Carl, Duke of Västergötland Princess Ingeborg of Denmark 27 August 1897 1897 First cousins once removed Oscar I of Sweden
Carl, Duke of Württemberg Princess Diane of Orléans 21 July 1960 1960 Double fourth cousins Louis Philippe I; Francis I of the Two Sicilies
Archduke Carl Christian of Austria Princess Marie Astrid of Luxembourg 6 February 1982 1982 Second cousins Robert I, Duke of Parma
Carol I of Romania Elisabeth of Wied 15 November 1869 1869 Fourth cousins once removed Louis VIII, Landgrave of Hesse-Darmstadt
Carol II of Romania Princess Helen of Greece and Denmark Metropolitan Cathedral of Athens, 10 March 1921 1921 Second cousins Queen Victoria
Carlos I of Portugal Amélie of Orléans 22 May 1886 1886 Third cousins once removed Charles IV of Spain
Prince Carlos of Bourbon-Two Sicilies Mercedes, Princess of Asturias
(first wife)
4 February 1901 1901 Second cousins Archduke Charles, Duke of Teschen
Prince Carlos of Bourbon-Two Sicilies Princess Louise of Orléans
(second wife)
16 November 1907 1907 Double third cousins Ferdinand I of the Two Sicilies; Charles IV of Spain
Carlos, Duke of Madrid Princess Margherita of Bourbon-Parma 4 February 1867 1867 Second cousins once removed Charles IV of Spain
Infante Carlos, Count of Molina Infanta Maria Francisca of Portugal
(first wife)
22 September 1816 1816 Second cousins once removed[70] Philip V of Spain
Infante Carlos, Count of Molina Maria Teresa, Princess of Beira
(second wife)
20 October 1838 1838 Second cousins once removed[70] Philip V of Spain
Infante Carlos, Count of Montemolin Princess Maria Carolina of Bourbon-Two Sicilies 10 July 1850 1850 First cousins Charles IV of Spain
Infante Carlos, Duke of Calabria Princess Anne of Orléans 2 May 1965 1965 Fourth cousins Ferdinand VII of Spain
Casimir, Margrave of Brandenburg-Bayreuth Susanna of Bavaria 25 August 1518 1518 Second cousins once removed Ernest, Duke of Austria
Catherine the Great Peter III of Russia 21 August 1745 1745 Second cousins Christian Albert, Duke of Holstein-Gottorp
Grand Duchess Catherine Mikhailovna of Russia Duke Georg August of Mecklenburg-Strelitz 16 February 1851 1851 First cousins twice removed Charles II, Grand Duke of Mecklenburg-Strelitz
Grand Duchess Catherine Pavlovna of Russia Duke George of Oldenburg
(first husband)
3 August 1809 1809 First cousins Frederick II Eugene, Duke of Württemberg
Grand Duchess Catherine Pavlovna of Russia William I of Württemberg
(second husband)
Saint Petersburg, 24 January 1816 1816 First cousins Frederick II Eugene, Duke of Württemberg
Princess Cécile Marita Dorothea of Hohenlohe-Langenburg (daughter of Kraft, Prince of Hohenlohe-Langenburg Count Cyril Amédée de Commarque 6 June 1998 1998 Fifth cousins Louis, Duke of Württemberg
Charles the Bold, Duke of Burgundy Catherine of France
(first wife)
19 May 1440 1440 Third cousins John II of France
Charles the Bold, Duke of Burgundy Isabella of Bourbon
(second wife)
Lille, 30 October 1454 1454 First cousins John the Fearless, Duke of Burgundy
Charles the Bold, Duke of Burgundy Margaret of York
(third wife)
Damme, 3 July 1468 1468 Third cousins Edward III of England
Charles I of Austria Princess Zita of Bourbon-Parma Schwarzau Castle, 21 October 1911 1911 Second cousins twice removed; fourth cousins John VI of Portugal; Charles IV of Spain
Charles I of England Henrietta Maria of France St Augustine's Abbey, Canterbury, Kent, 13 June 1625 1625 Third cousins once removed Francis, Count of Vendôme
Charles I of Württemberg Olga Nikolaevna of Russia 13 July 1846 1846 Second cousins Frederick II Eugene, Duke of Württemberg
Charles II, Duke of Parma Princess Maria Teresa of Savoy Lucca, 5 September 1820 1820 Double second cousins Philip, Duke of Parma; Francis I, Holy Roman Emperor and Maria Theresa of Austria
Charles II of England Catherine of Braganza Domus Dei, Portsmouth, Hampshire, 21 May 1662 1662 Fifth cousins; seventh cousins once removed Isabella I of Castile; Ferdinand I of Aragon
Charles II of Spain Marie Louise of Orléans
(first wife)
19 November 1679 1679 First cousins once removed Philip III of Spain
Charles II of Spain Maria Anna of Neuburg
(second wife)
28 August 1689 1689 Second cousins once removed William V, Duke of Bavaria
Charles II, Elector Palatine Princess Wilhelmine Ernestine of Denmark 20 September 1671 1671 Second cousins once removed Frederick II of Denmark
Charles II, Archduke of Austria Maria Anna of Bavaria 26 August 1571 1571 Third cousins[70] Frederick III, Holy Roman Emperor
Charles II, Duke of Mantua and Montferrat Archduchess Isabella Clara of Austria 7 November 1649 1649 Second cousins twice removed Ferdinand I, Holy Roman Emperor
Charles II, Grand Duke of Mecklenburg-Strelitz Landgravine Friederike of Hesse-Darmstadt
(first wife)
18 September 1768 1768 Third cousins once removed Ernest I, Duke of Saxe-Gotha
Charles II, Grand Duke of Mecklenburg-Strelitz Landgravine Charlotte of Hesse-Darmstadt
(second wife)
28 September 1784 1784 Third cousins once removed Ernest I, Duke of Saxe-Gotha
Charles III of Spain Maria Amalia of Saxony May 8, 1738 1738 Fourth cousins Philip III of Spain
Charles III, Duke of Parma Louise Marie Thérèse d'Artois Schloss Frohsdorf, Austria, 10 November 1845 1845 Second cousins Victor Amadeus III of Sardinia
Charles III William, Margrave of Baden-Durlach Magdalena Wilhelmine of Württemberg 27 June 1697 1697 First cousins once removed Frederick III, Duke of Holstein-Gottorp
Charles IV of Spain Maria Luisa of Parma La Granja Palace, 4 September 1765 1765 First cousins Philip V of Spain
Charles IV, Duke of Lorraine Nicole, Duchess of Lorraine 23 May 1621 1621 First cousins Charles III, Duke of Lorraine
Charles V, Holy Roman Emperor Isabella of Portugal Seville, 10 March 1526 1526 First cousins Ferdinand II of Aragon and Isabella I of Castile
Charles V, Duke of Lorraine Eleanor of Austria, Queen of Poland 6 February 1678 1678 Third cousins Francis I, Duke of Lorraine
Charles VII of France Marie of Anjou 18 December 1422 1422 Second cousins John II of France
Charles VII, Holy Roman Emperor Maria Amalia of Austria 5 October 1722 1722 Third cousins Ferdinand II, Holy Roman Emperor
Charles VIII of France Anne of Brittany 6 December 1491 1491 Third cousins Charles V of France
Charles IX of France Elisabeth of Austria, Queen of France 26 November 1570 1570 Fourth cousins Gaston IV, Count of Foix and Eleanor of Navarre
Charles X of France Princess Maria Theresa of Savoy Palace of Versailles, 16 November 1773 1773 Double second cousins once removed Louis, Dauphin of France; Victor Amadeus II of Sardinia
Charles X Gustav of Sweden Hedwig Eleonora of Holstein-Gottorp 24 October 1654 1654 Third cousins Philip I, Landgrave of Hesse
Charles XI of Sweden Ulrika Eleonora of Denmark 26 September 1679 1679 Second cousins once removed Frederick II of Denmark
Charles XIII of Sweden Hedvig Elisabeth Charlotte of Holstein-Gottorp 7 July 1774 1774 First cousins Christian August of Holstein-Gottorp, Prince of Eutin
Charles XV of Sweden Louise of the Netherlands 19 June 1850 1850 Third cousins Prince George William of Hesse-Darmstadt
Prince Charles of Hesse and by Rhine Princess Elisabeth of Prussia 22 October 1836 1836 Second cousins Louis IX, Landgrave of Hesse-Darmstadt
Prince Charles of Hesse-Kassel Princess Louise of Denmark 30 August 1766 1766 First cousins George II of Great Britain
Prince Charles of Prussia Princess Marie of Saxe-Weimar-Eisenach 26 May 1827 1827 Second cousins Louis IX, Landgrave of Hesse-Darmstadt
Charles, Count of Angoulême Louise of Savoy 16 February 1488 1488 Third cousins once removed John II of France
Charles, Duke of Aumale Marie of Lorraine 10 November 1576 1576 First cousins Claude, Duke of Guise
Charles, Duke of Berry Marie Louise Elisabeth d'Orléans 6 July 1710 1710 Half-first cousins Louis XIV of France
Charles, Prince of Viana Agnes of Cleves 30 September 1439 1439 Third cousins John II of France
Charles, Prince of Wales Diana Spencer
(first wife)
St Paul's Cathedral, 29 July 1981 1981 Seventh cousins once removed William Cavendish, 3rd Duke of Devonshire
Charles, Prince of Wales Camilla Shand Parker Bowles
(second wife)
9 April 2005 2005 Ninth cousins once removed Henry Cavendish, 2nd Duke of Newcastle
Charles, Prince Napoléon Princess Béatrice of Bourbon-Two Sicilies 19 December 1978 1978 Fourth cousins once removed Leopold II, Holy Roman Emperor
Charles Albert of Sardinia Maria Theresa of Austria 30 September 1817 1817 Fourth cousins Leopold I, Holy Roman Emperor
Charles Alexander, Grand Duke of Saxe-Weimar-Eisenach Princess Sophie of the Netherlands 8 October 1842 1842 First cousins Paul I of Russia
Prince Charles Alexander of Lorraine Archduchess Maria Anna of Austria 7 January 1744 1744 Half-second cousins Ferdinand III, Holy Roman Emperor
Charles Amadeus, Duke of Nemours Élisabeth de Bourbon 11 July 1643 1643 Second cousins once removed Philippe, Duke of Nemours
Charles Augustus, Hereditary Grand Duke of Saxe-Weimar-Eisenach Princess Pauline of Saxe-Weimar-Eisenach 26 August 1873 1873 Second cousins Karl August, Grand Duke of Saxe-Weimar-Eisenach
Charles Edward, Duke of Saxe-Coburg and Gotha Princess Victoria Adelaide of Schleswig-Holstein 11 October 1905 1905 Half-second cousins once removed Princess Victoria of Saxe-Coburg-Saalfeld
Charles Emmanuel I, Duke of Savoy Infanta Catherine Michelle of Spain 1582 1582 First cousins once removed (through Francis I of France);
Second cousins (through Manuel I of Portugal)
Francis I of France; Manuel I of Portugal
Charles Emmanuel II, Duke of Savoy Françoise Madeleine d'Orléans
(first wife)
4 March 1663 1663 First cousins Henry IV of France
Charles Emmanuel II, Duke of Savoy Marie Jeanne Baptiste of Savoy-Nemours
(second wife)
20 May 1665 1665 Half-first cousins once removed Henry IV of France
Charles Emmanuel III of Sardinia Anne Christine of Sulzbach, Princess of Piedmont
(first wife)
15 March 1722 1722 Fourth cousins Frederick II of Denmark
Charles Emmanuel III of Sardinia Elisabeth Therese of Lorraine
(third wife)
1 April 1737 1737 Half-first cousins Philippe I, Duke of Orléans
Charles Emmanuel IV of Sardinia Marie Clotilde of France Palace of Versailles, 27 August 1775 1775 Double second cousin once removed Victor Amadeus II of Sardinia; Louis, Dauphin of France
Charles Eugene, Duke of Württemberg Margravine Elisabeth Fredericka Sophie of Brandenburg-Bayreuth 26 September 1748 1748 Fourth cousins twice removed Joachim Frederick, Elector of Brandenburg
Charles Felix of Sardinia Princess Maria Cristina of Naples and Sicily Palermo, 6 April 1807 1807 First cousins once removed Philip V of Spain
Charles Ferdinand, Duke of Berry Marie-Caroline de Bourbon-Sicile, duchesse de Berry 24 April 1816 1816 Second cousins once removed Philip V of Spain
Charles Frederick, Grand Duke of Saxe-Weimar-Eisenach Grand Duchess Maria Pavlovna of Russia 3 August 1804 1804 Third cousins Frederick William I of Prussia
Charles Frederick, Grand Duke of Baden Landgravine Caroline Louise of Hesse-Darmstadt January 28, 1751 1751 Half-second cousins once removed Louis VI, Landgrave of Hesse-Darmstadt
Charles Gonthier, Prince of Schwarzburg-Sondershausen Princess Marie Gasparine of Saxe-Altenburg 12 June 1869 1869 Fourth cousins Louis VIII, Landgrave of Hesse-Darmstadt
Charles Louis, Hereditary Prince of Baden Princess Amalie of Hesse-Darmstadt 15 July 1775 1775 First cousins Louis VIII, Landgrave of Hesse-Darmstadt
Charles Lucien Bonaparte Zénaïde Bonaparte 29 June 1822 1822 First cousins Carlo Buonaparte
Prince Charles Philippe, Duke of Anjou Diana Álvares Pereira de Melo, 11th Duchess of Cadaval 21 June 2008 2008 Fifth cousins once removed Francis I of the Two Sicilies
Archduke Charles Stephen of Austria Archduchess Maria Theresa of Austria 28 February 1886 1886 Second cousins once removed Leopold II, Holy Roman Emperor
Charles Theodore, Elector of Bavaria Countess Palatine Elisabeth Auguste of Sulzbach 17 January 1742 1742 First cousins Theodore Eustace, Count Palatine of Sulzbach
Charles William Ferdinand, Duke of Brunswick-Wolfenbüttel Princess Augusta of Great Britain 16 January 1764 1764 Second cousins George I of Great Britain
Charles William Frederick, Margrave of Brandenburg-Ansbach Princess Friederike Luise of Prussia 30 May 1729 1729 Fourth cousins twice removed John George, Elector of Brandenburg
Charlotte, Grand Duchess of Luxembourg Prince Felix of Bourbon-Parma 6 November 1919 1919 First cousins Miguel of Portugal
Christian II of Denmark Isabella of Austria 11 July 1514 1514 Third cousins Ernest, Duke of Austria
Christian II, Elector of Saxony Hedwig of Denmark 12 September 1602 1602 First cousins once removed Christian III of Denmark
Christian III of Denmark Dorothea of Saxe-Lauenburg 29 October 1525 1525 Double third cousins Frederick I, Elector of Brandenburg; Frederick I, Elector of Saxony
Christian IV of Denmark Anne Catherine of Brandenburg 27 November 1597 1597 Second cousins once removed Joachim I Nestor, Elector of Brandenburg
Christian V of Denmark Charlotte Amalie of Hesse-Kassel 25 June 1667 1667 Second cousins once removed Joachim Frederick, Elector of Brandenburg
Christian VI of Denmark Sophie Magdalene of Brandenburg-Kulmbach 7 August 1721 1721 Fourth cousins once removed Christian III of Denmark
Christian VII of Denmark Princess Caroline Matilda of Wales Christiansborg Palace, Copenhagen, 8 November 1766 1766 First cousins George II of Great Britain
Christian VIII of Denmark Duchess Charlotte Frederica of Mecklenburg-Schwerin
(first wife)
Ludwigslust, 21 June 1806 1806 First cousins Ludwig, Duke of Mecklenburg-Schwerin
Christian VIII of Denmark Caroline Amalie of Augustenburg
(second wife)
22 May 1815 1815 First cousin once removed Frederick V of Denmark
Christian IX of Denmark Louise of Hesse-Kassel Amalienborg Palace, Copenhagen, 26 May 1842 1842 Double second cousins Frederick II, Landgrave of Hesse-Kassel and Princess Mary of Great Britain; Frederick V of Denmark
Christian X of Denmark Alexandrine of Mecklenburg-Schwerin 26 April 1898 1898 Third cousins Frederick William III of Prussia
Christian, Prince-Elect of Denmark Magdalene Sibylle of Saxony 5 October 1634 1634 Second cousins once removed Christian III of Denmark
Prince Christian of Schaumburg-Lippe Princess Feodora of Denmark 9 September 1937 1937 First cousins Frederick VIII of Denmark
Prince Christian of Schleswig-Holstein Princess Helena of the United Kingdom 5 July 1866 1866 Third cousins Frederick, Prince of Wales
Christian Albrecht, Prince of Hohenlohe-Langenburg Caroline of Stolberg-Gedern 13 April 1761 1761 First cousins Louis Crato, Count of Nassau-Saarbrücken
Christian Albert, Duke of Holstein-Gottorp Princess Frederica Amalia of Denmark 24 October 1667 1667 Double third cousins Christian III of Denmark; John George, Elector of Brandenburg
Christian August II, Duke of Schleswig-Holstein-Sonderburg-Augustenburg Countess Louise Sophie of Danneskiold-Samsøe 18 September 1820 1820 Third cousins Christian Gyldenløve
Christian Ernst, Margrave of Brandenburg-Bayreuth Erdmuthe Sophie of Saxony
(first wife)
29 October 1662 1662 First cousins Christian, Margrave of Brandenburg-Bayreuth
Christian Ernst, Margrave of Brandenburg-Bayreuth Sofie Louise of Württemberg
(second wife)
8 February 1671 1671 Second cousins once removed John George, Elector of Brandenburg
Christian Louis, Duke of Brunswick-Lüneburg Sophia Dorothea of Schleswig-Holstein-Sonderburg-Glücksburg October 9, 1653 1653 Second cousins Christian III of Denmark
Duke Christian Louis of Mecklenburg Princess Barbara of Prussia 5 July 1954 1954 Fourth cousins Frederick Louis, Hereditary Grand Duke of Mecklenburg-Schwerin
Christian Ludwig II, Duke of Mecklenburg-Schwerin Duchess Gustave Caroline of Mecklenburg-Strelitz 13 November 1714 1714 Half-first cousins Adolf Frederick I, Duke of Mecklenburg
Christopher of Bavaria Dorothea of Brandenburg 12 September 1445 1445 Third cousins Frederick II, Margrave of Meissen
Prince Christopher of Greece and Denmark Princess Françoise of Orléans 11 February 1929 1929 Fourth cousins once removed Duke Louis of Mecklenburg-Schwerin
Christopher, Duke of Mecklenburg Dorothea of Denmark, Duchess of Mecklenburg 27 October 1573 1573 First cousins twice removed Christian I of Denmark
Claude, Duke of Guise Antoinette de Bourbon 9 June 1513 1513 Fifth cousins once removed Louis I, Duke of Bourbon
Claudia Antonia Faustus Cornelius Sulla Felix
(second husband)
AD 47 0047 Second cousins Mark Antony
Claudius, Emperor of Rome Valeria Messalina
(third wife)
Rome, AD 37 or AD 38 0038 First cousins once removed Mark Antony and Octavia Minor
Claudius, Emperor of Rome Agrippina the Younger
(fourth wife)
49 49 Second cousins once removed[70] Gaius Octavius and Atia Balba Caesonia
Constantine I of Greece Sophia of Prussia 27 October 1889 1889 Second cousins once removed (through Frederick William III of Prussia); third cousins (through Paul I of Russia) Frederick William III of Prussia; Paul I of Russia
Constantine II of Greece Princess Anne-Marie of Denmark Athens, 18 September 1964 1964 Double third cousins Christian IX of Denmark; Queen Victoria
Cosimo II de' Medici, Grand Duke of Tuscany Archduchess Maria Maddalena of Austria 1608 1608 Second cousins twice removed Philip I of Castile and Joanna of Castile
Cosimo III de' Medici, Grand Duke of Tuscany Marguerite Louise d'Orléans 12 June 1661 1661 Second cousins Francesco I de' Medici, Grand Duke of Tuscany
David II of Scotland Joan of the Tower 17 July 1328 1328 Sixth cousins Henry I of England
Denis of Portugal Elizabeth of Aragon 1288 1288 Third cousins once removed Ramon Berenguer IV, Count of Barcelona and Petronilla of Aragon
Denis, Lord of Cifuentes Joan of Castile, Lady of Cifuentes 1372 1372 Second cousins once removed Sancho IV of Castile
Dominik Rainer Radziwiłł Princess Eugénie of Greece and Denmark 30 May 1938 1938 Fourth cousins Louis, Duke of Württemberg
Countess Palatine Dorothea Sophie of Neuburg Odoardo Farnese, Hereditary Prince of Parma
(first husband)
17 September 1690 1690 Third cousins once removed Albert V, Duke of Bavaria
Countess Palatine Dorothea Sophie of Neuburg Francesco Farnese, Duke of Parma
(second husband)
7 December 1696 1696 Third cousins once removed Albert V, Duke of Bavaria
Drusus Caesar Aemilia Lepida 0036 Third cousins Scribonia
Drusus Julius Caesar Livilla AD 4 0004 First cousins Tiberius Claudius Nero
Duarte of Portugal, 4th Duke of Guimarães Isabel of Braganza, Duchess of Guimarães 1537 1537 First cousins once removed Ferdinand, Duke of Viseu
Duarte Nuno, Duke of Braganza Maria Francisca of Orléans-Braganza, Duchess of Braganza 13 October 1942 1942 Second cousins twice removed John VI of Portugal
Duncan II of Scotland Ethelreda Second cousins Crínán of Dunkeld
Edmund Crouchback Blanche of Artois 29 October 1276 1276 Second cousins once removed Henry II of England
Edmund of Langley, 1st Duke of York Infanta Isabella of Castile
(first wife)
1372 1372 Third cousins twice removed Ferdinand III of Castile
Edmund of Langley, 1st Duke of York Joan Holland
(second wife)
c. 4 November 1393 1393 Second cousins once removed Edward I of England
Eduard, Duke of Anhalt Princess Louise Charlotte of Saxe-Altenburg 6 February 1895 1895 Second cousins Frederick, Duke of Saxe-Altenburg
Edward, King of Portugal Eleanor of Aragon, Queen of Portugal 22 September 1428 1428 Half-first cousins once removed Peter I of Portugal
Edward I of England Eleanor of Castile
(first wife)
1254 1254 Second cousins once removed Henry II
Edward I of England Margaret of France
(second wife)
8 September 1299 1299 First cousins once removed Ramon Berenguer IV, Count of Provence
Edward II of England Isabella of France Boulogne-sur-Mer, 25 January 1308 1308 Third cousins once removed Alfonso VIII of Castile
Edward III of England Philippa of Hainault York Minister, 24 January 1328 1328 Second cousins Philip III of France
Edward IV of England Elizabeth Woodville 1 May 1464 1464 Sixth cousins once removed Blanche de Brienne, Baroness Tingry
Edward VII of the United Kingdom Princess Alexandra of Denmark St. George's Chapel, Windsor Castle, 10 March 1863 1863 Third cousins once removed; fourth cousins Duke Louis of Mecklenburg-Schwerin; George II of Great Britain
Edward the Black Prince, Prince of Wales Joan, 4th Countess of Kent Windsor Castle, 10 October 1361 1361 First cousins once removed Edward I of England
Edward of Norwich, 2nd Duke of York Beatrice of Portugal 29 August 1381 1381 Second cousins once removed Afonso IV of Portugal
Edward of Westminster, Prince of Wales Anne Neville 13 December 1470 1470 Half-third cousins John of Gaunt
Prince Edward, Duke of Kent and Strathearn Princess Victoria of Saxe-Coburg-Saalfeld 29 May 1818 1818 Third cousins once removed Frederick I, Duke of Saxe-Gotha-Altenburg
Prince Edward, Earl of Wessex Sophie Rhys-Jones 19 June 1999 1999 11th cousins once removed Nicholas St. John
Prince Eitel Friedrich of Prussia Duchess Sophia Charlotte of Oldenburg 27 February 1906 1906 Third cousins Frederick William III of Prussia
Eleanor of Leicester Simon de Montfort, 6th Earl of Leicester January 1238 1238 Half-third cousins Henry I of England
Elias, Duke of Parma Archduchess Maria Anna of Austria 25 May 1903 1903 Second cousins Archduke Charles, Duke of Teschen
Archduchess Elisabeth Franziska of Austria Archduke Ferdinand Karl Viktor of Austria-Este
(first husband)
Vienna, 4 October 1847 1847 Second cousins Francis I, Holy Roman Emperor and Maria Theresa of Austria
Archduchess Elisabeth Franziska of Austria Archduke Karl Ferdinand of Austria
(second husband)
Vienna, 18 April 1854 1854 First cousins Leopold II, Holy Roman Emperor
Margravine Elisabeth Sophie of Brandenburg Frederick Casimir Kettler
(first husband)
29 April 1691 1691 First cousins George William, Elector of Brandenburg
Margravine Elisabeth Sophie of Brandenburg Christian Ernst, Margrave of Brandenburg-Bayreuth
(second husband)
30 March 1703 1703 Second cousins twice removed John George, Elector of Brandenburg
Queen Elizabeth II Prince Philip, Duke of Edinburgh Westminster Abbey, 20 November 1947 1947 Second cousins once removed (through Christian IX of Denmark);
Third cousins (through Queen Victoria)
Christian IX of Denmark; Queen Victoria
Princess Elizabeth of Greece and Denmark Carl Theodor, Count of Toerring-Jettenbach Fourth cousins Charles Louis, Hereditary Prince of Baden
Duchess Elsa of Württemberg Prince Albert of Schaumburg-Lippe 6 May 1897 1897 First cousins once removed George William, Prince of Schaumburg-Lippe
Emich, 5th Prince of Leiningen Princess Feodore of Hohenlohe-Langenburg 12 July 1894 1894 Second cousins Emich Carl, 2nd Prince of Leiningen and Princess Victoria of Saxe-Coburg-Saalfeld
Emich Kyrill, Prince of Leiningen Duchess Eilika of Oldenburg 10 August 1950 1950 Half-second cousins once removed Frederick Francis II, Grand Duke of Mecklenburg-Schwerin
Prince Emmanuel, Duke of Vendôme Princess Henriette of Belgium 12 February 1896 1896 Second cousins Louis Philippe I
Prince Emanuele Filiberto, Duke of Aosta Princess Hélène of Orléans 25 June 1895 1895 Double fourth cousins Francis I, Holy Roman Emperor and Maria Theresa; Charles III of Spain
Emmanuel Philibert, Duke of Savoy Margaret of France, Duchess of Berry 10 July 1559 1559 Half-first cousins once removed Philip II, Duke of Savoy
Emmanuel Théodose de La Tour d'Auvergne Marie Armande de La Trémoille 1 February 1696 1696 Second cousins once removed Henri de La Tour d'Auvergne, Duke of Bouillon
Enrichetta d'Este Leopold of Hesse-Darmstadt 23 March 1740 1740 Third cousins Louis V, Landgrave of Hesse-Darmstadt
Eric II, Duke of Brunswick-Lüneburg Sidonie of Saxony
(first wife)
17 May 1545 1545 Third cousins once removed Frederick I, Elector of Brandenburg
Eric II, Duke of Brunswick-Lüneburg Dorothea of Lorraine
(second wife)
26 November 1575 1575 Third cousins Christian I of Denmark
Prince Erik of Bourbon-Parma (son of Prince Michel of Bourbon-Parma) Countess Lydia af Holstein-Ledreborg (daughter of Princess Marie Gabriele of Luxembourg) 8 August 1980 1980 Second cousins Robert I, Duke of Parma
Ernest I, Duke of Saxe-Gotha Princess Elisabeth Sophie of Saxe-Altenburg 24 October 1636 1636 First cousins once removed Johann Wilhelm, Duke of Saxe-Weimar
Ernest I, Duke of Saxe-Coburg and Gotha Princess Louise of Saxe-Gotha-Altenburg 31 July 1817 1817 Second cousins once removed Francis Josias, Duke of Saxe-Coburg-Saalfeld
Ernest II, Duke of Saxe-Gotha-Altenburg Princess Charlotte of Saxe-Meiningen 21 March 1769 1769 Half-first cousins once removed Bernhard I, Duke of Saxe-Meiningen
Ernest Augustus, Elector of Brunswick-Lüneburg Sophia of the Palatinate 30 September 1658 1658 Second cousins once removed Christian III of Denmark
Ernest Augustus I of Hanover Frederica of Mecklenburg-Strelitz Carlton House, London, 29 August 1815 1815 First cousins Duke Charles Louis Frederick of Mecklenburg
Ernest Augustus, Crown Prince of Hanover Princess Thyra of Denmark 22 December 1878 1878 Fourth cousins George II of Great Britain
Ernest Augustus, Duke of Brunswick Princess Victoria Louise of Prussia 24 May 1913 1913 Third cousins once removed George III of the United Kingdom
Ernest Frederick I, Duke of Saxe-Hildburghausen Countess Sophia Albertine of Erbach-Erbach 4 February 1704 1704 Second cousins William of Nassau-Hilchenbach
Ernest Frederick III, Duke of Saxe-Hildburghausen Princess Ernestine of Saxe-Weimar 1 July 1758 1758 Fourth cousins Johann II, Duke of Saxe-Weimar
Ernest Günther, Duke of Schleswig-Holstein-Sonderburg-Augustenburg Auguste of Schleswig-Holstein-Sonderburg-Glücksburg 15 June 1651 1651 First cousins John II, Duke of Schleswig-Holstein-Sonderburg
Ernest Leopold, Landgrave of Hesse-Rotenburg Eleonore of Löwenstein-Wertheim 9 November 1704 1704 First cousins Ferdinand Karl, Count of Löwenstein-Wertheim-Rochefort
Ernst I, Duke of Saxe-Altenburg Princess Agnes of Anhalt-Dessau 28 April 1853 1853 Second cousins Charles II, Grand Duke of Mecklenburg-Strelitz
Ernst II, Duke of Saxe-Altenburg Princess Adelaide of Schaumburg-Lippe 17 February 1898 1898 Double fourth cousins Frederick II, Landgrave of Hesse-Kassel; Duke Louis of Mecklenburg-Schwerin
Ernst II, Prince of Hohenlohe-Langenburg Princess Alexandra of Saxe-Coburg and Gotha 20 April 1896 1896 Half second cousins Princess Victoria of Saxe-Coburg-Saalfeld
Ernst Frederick II, Duke of Saxe-Hildburghausen Countess Caroline of Erbach-Fürstenau 19 June 1726 1729 Second cousins George Albert I of Erbach-Breuberg
Ernst Gunther, Duke of Schleswig-Holstein Princess Dorothea of Saxe-Coburg and Gotha 2 August 1898 1898 Third cousins Francis, Duke of Saxe-Coburg-Saalfeld
Prince Ernst Heinrich of Saxony Princess Sophie of Luxembourg 12 April 1921 1921 Second cousins twice removed John VI of Portugal
Ernst Ludwig I, Duke of Saxe-Meiningen Dorothea Marie of Saxe-Gotha-Altenburg
(first wife)
19 September 1704 1704 First cousins Ernest I, Duke of Saxe-Gotha
Ernst Ludwig I, Duke of Saxe-Meiningen Margravine Elisabeth Sophie of Brandenburg
(second wife)
3 June 1714 1714 Third cousins Albert Frederick, Duke of Prussia
Duke Eugen of Württemberg Princess Helene of Hohenlohe-Langenburg 11 September 1827 1827 Third cousins Louis Crato, Count of Nassau-Saarbrücken
Duke Eugen of Württemberg Princess Mathilde of Schaumburg-Lippe 15 July 1843 1843 First cousins George I, Prince of Waldeck and Pyrmont
Duke Eugen of Württemberg Grand Duchess Vera Constantinovna of Russia 4 May 1874 1874 Third cousins Frederick II Eugene, Duke of Württemberg
Prince Eugenio, Duke of Genoa Princess Lucia of Bourbon-Two Sicilies 29 October 1938 1938 Second cousins once removed Ludwig I of Bavaria
Princess Eulalia of Thurn and Taxis Prince Philipp Ernst of Thurn and Taxis 8 September 1929 1929 Fourth cousins once removed Alexander Ferdinand, 3rd Prince of Thurn and Taxis
Eustace IV, Count of Boulogne Constance of France, Countess of Toulouse 1140 1140 Third cousins once removed Robert II of France
Prince Feodor Alexandrovich of Russia Irina Paley 21 May 1923 1923 First cousins once removed Alexander II of Russia
Ferdinand I of Austria Princess Maria Anna of Savoy Vienna, 27 February 1831 1831 Second cousins Francis I, Holy Roman Emperor and Maria Theresa of Austria
Ferdinand I of Bulgaria Princess Marie Louise of Bourbon-Parma 20 April 1893 1893 Second cousins once removed Ferdinand I of the Two Sicilies
Ferdinand I of Portugal Leonor Teles 5 May 1372 1372 Fifth cousins Sancho I of Portugal
Ferdinand I of Romania Princess Marie of Edinburgh 10 January 1893 1893 Third cousins Francis, Duke of Saxe-Coburg-Saalfeld
Ferdinand I of Naples Joanna of Aragon, Queen of Naples 14 September 1477 1477 First cousins Ferdinand I of Aragon
Ferdinand I of the Two Sicilies Maria Carolina of Austria 7 April 1768 1768 Second cousins once removed Leopold I, Holy Roman Emperor
Ferdinand I, Holy Roman Emperor Anne of Bohemia and Hungary 26 May 1521 1521 Half-second cousins once removed John II of Aragon
Ferdinand II of León Urraca of Portugal
(first wife)
May or June 1165 1165 Half-second cousins Alfonso VI of León and Castile
Ferdinand II of León Teresa Fernández de Traba
(second wife)
7 October 1178 1178 Half-first cousins Alfonso VI of León and Castile
Ferdinand II of the Two Sicilies Princess Maria Cristina of Savoy
(first wife)
Cagliari, 21 November 1832 1832 Second cousins Francis I, Holy Roman Emperor and Maria Theresa of Austria
Ferdinand II of the Two Sicilies Archduchess Maria Theresa of Austria
(second wife)
Vienna, 9 January 1837 1837 Double second cousins Charles III of Spain; Francis I, Holy Roman Emperor and Maria Theresa of Austria
Ferdinand II, Holy Roman Emperor Maria Anna of Bavaria
(first wife)
23 April 1600 1600 First cousins Albert V, Duke of Bavaria
Ferdinand II, Holy Roman Emperor Eleonora Gonzaga
(second wife)
2 February 1622 1622 First cousins once removed Ferdinand I, Holy Roman Emperor
Ferdinand II, Archduke of Austria Anna Juliana Gonzaga 14 May 1582 1582 Half-fourth cousins twice removed[70] Ferdinand I of Aragon
Ferdinand III, Holy Roman Emperor Maria Anna of Spain
(first wife)
20 February 1631 1631 First cousins Charles II, Archduke of Austria
Ferdinand III, Holy Roman Emperor Maria Leopoldine of Austria
(second wife)
2 July 1648 1648 First cousins Charles II, Archduke of Austria
Ferdinand III, Holy Roman Emperor Eleonora Gonzaga
(third wife)
30 April 1651 1651 Second cousins twice removed Ferdinand I, Holy Roman Emperor
Ferdinand III, Grand Duke of Tuscany Princess Luisa of Naples and Sicily
(first wife)
Florence, 15 August 1790 1790 Double first cousins Francis I, Holy Roman Emperor and Maria Theresa of Austria;
Charles III of Spain and Maria Amalia of Saxony
Ferdinand III, Grand Duke of Tuscany Princess Maria Ferdinanda of Saxony
(second wife)
6 May 1821 1821 First cousins once removed Francis I, Holy Roman Emperor and Maria Theresa of Austria
Ferdinand IV, Grand Duke of Tuscany Princess Anna of Saxony
(first wife)
24 November 1856 1856 Double third cousins Francis I, Holy Roman Emperor and Maria Theresa of Austria; Philip, Duke of Parma
Ferdinand IV, Grand Duke of Tuscany Princess Alice of Parma
(second wife)
11 January 1868 1868 Half-first cousins once removed Francis I of the Two Sicilies
Ferdinand IV of Castile Constance of Portugal 23 January 1302 1302 Half-first cousins once removed Alfonso X of Castile
Ferdinand VI of Spain Barbara of Portugal 1729 1729 Third cousins once removed Philip III of Spain
Ferdinand VII of Spain Princess Maria Antonia of Naples and Sicily
(first wife)
6 October 1802 1802 First cousins Charles III of Spain
Ferdinand VII of Spain Maria Isabel of Portugal
(second wife)
29 September 1816 1816 Second cousins once removed[70] Philip V of Spain
Ferdinand VII of Spain Maria Josepha Amalia of Saxony
(third wife)
20 October 1819 1819 First cousins once removed Philip, Duke of Parma
Ferdinand VII of Spain Maria Christina of the Two Sicilies
(fourth wife)
11 December 1829 1829 First cousins once removed[70] Charles III of Spain
Ferdinand, Duke of Parma Archduchess Maria Amalia of Austria 19 July 1769 1769 Third cousins once removed Louis XIII of France
Ferdinand, Hereditary Prince of Denmark Princess Caroline of Denmark 1 August 1829 1829 Half-first cousins once removed Frederick V of Denmark
Prince Ferdinand of Bavaria Infanta Maria Teresa of Spain 12 January 1906 1906 First cousins Isabel II of Spain
Ferdinand, Duke of Breisgau Maria Beatrice d'Este, Duchess of Massa 5 October 1771 1771 Second cousins once removed Philippe I, Duke of Orléans
Ferdinand, Duke of Viseu Beatrice, Duchess of Viseu 1447 1447 First cousins John I of Portugal
Ferdinand Albert II, Duke of Brunswick-Wolfenbüttel Princess Antoinette of Brunswick-Wolfenbüttel 15 October 1712 1712 First cousins once removed Augustus the Younger, Duke of Brunswick-Lüneburg
Ferdinand Charles, Archduke of Austria Anna de' Medici, Archduchess of Austria 10 June 1646 1646 Double first cousins Charles II, Archduke of Austria; Ferdinando I de' Medici, Grand Duke of Tuscany
Prince Ferdinand Pius, Duke of Calabria Princess Maria Ludwiga Theresia of Bavaria 31 May 1897 1897 Second cousins Leopold II, Grand Duke of Tuscany
Prince Ferdinando, Duke of Genoa Princess Elisabeth of Saxony 22 April 1850 1850 Double third cousins Augustus III of Poland; Francis I, Holy Roman Emperor and Maria Theresa
Ferdinando Gonzaga, Duke of Mantua Catherine de' Medici, Governor of Siena February 16, 1617 1617 First cousins once removed Cosimo I de' Medici, Grand Duke of Tuscany
Ferdinando Carlo Gonzaga, Duke of Mantua and Montferrat Anna Isabella Gonzaga
(first wife)
1671 1671 Second cousins once removed; third cousins Charles Emmanuel I, Duke of Savoy; Cosimo I de' Medici, Grand Duke of Tuscany
Ferdinando Carlo Gonzaga, Duke of Mantua and Montferrat Suzanne Henriette of Lorraine
(second wife)
8 November 1704 1704 Fifth cousins once removed René II, Duke of Lorraine
Ferdinando de' Medici, Grand Prince of Tuscany Duchess Violante Beatrice of Bavaria 9 January 1689 1689 Third cousins Charles II, Archduke of Austria
Ferdinando II de' Medici, Grand Duke of Tuscany Vittoria della Rovere 26 September 1633 1633 First cousins Ferdinando I de' Medici, Grand Duke of Tuscany
Fernando II, Duke of Braganza Isabella of Viseu 1472 1472 Half-second cousins John I of Portugal
Francesco I d'Este, Duke of Modena Maria Caterina Farnese
(first wife)
11 January 1631 1631 Third cousins Charles V, Holy Roman Emperor
Francesco I d'Este, Duke of Modena Vittoria Farnese d'Este
(second wife)
12 February 1648 1648 Third cousins Charles V, Holy Roman Emperor
Francesco II d'Este, Duke of Modena Margherita Maria Farnese 14 July 1692 1692 First cousins Francesco I d'Este, Duke of Modena
Francesco III d'Este, Duke of Modena Charlotte Aglaé d'Orléans 11 February 1720 1720 Third cousins Frederick V, Elector Palatine
Francesco IV Gonzaga, Duke of Mantua Margaret of Savoy, Vicereine of Portugal 19 February 1608 1608 Third cousins Philip I of Castile and Joanna of Castile
Francesco Maria de' Medici, Duke of Rovere and Montefeltro Eleonora Luisa Gonzaga 14 July 1709 1709 Third cousins once removed Cosimo I de' Medici, Grand Duke of Tuscany
Francis I of France Claude of France, Duchess of Brittany
(first wife)
Saint-Germain-en-Laye, 18 May 1514 1514 Second cousins Louis I, Duke of Orléans
Francis I of France Eleanor of Austria
(second wife)
4 July 1530 1530 Second cousins once removed Charles I, Duke of Bourbon
Francis I of the Two Sicilies Archduchess Maria Clementina of Austria
(first wife)
Foggia, 26 June 1797 1797 Double first cousins Francis I, Holy Roman Emperor and Maria Theresa of Austria;
Charles III of Spain and Maria Amalia of Saxony
Francis I of the Two Sicilies María Isabella of Spain
(second wife)
Barcelona, 6 July 1820 1820 First cousin Charles III of Spain
Francis I, Holy Roman Emperor Maria Theresa of Austria 12 February 1736 1736 Half-second cousins Ferdinand III, Holy Roman Emperor
Francis II, Holy Roman Emperor Princess Maria Theresa of Naples and Sicily
(second wife)
15 September 1790 1790 Double first cousins Francis I, Holy Roman Emperor and Maria Theresa of Austria;
Charles III of Spain and Maria Amalia of Saxony
Francis II, Holy Roman Emperor Archduchess Maria Ludovika of Austria-Este
(third wife)
6 January 1808 1808 First cousin Francis I, Holy Roman Emperor and Maria Theresa of Austria
Francis IV, Duke of Modena Maria Beatrice of Savoy 20 June 1812 1812 Third cousins once removed[70] Philippe I, Duke of Orléans
Francis, Duke of Saxe-Coburg-Saalfeld Princess Sophie of Saxe-Hildburghausen 6 March 1776 1776 Third cousins once removed Ernest I, Duke of Saxe-Gotha
Prince Francis, Count of Trapani Archduchess Maria Isabella of Austria 10 April 1850 1850 First cousins once removed[70] Ferdinand I of the Two Sicilies
Francis, Duke of Teck Princess Mary Adelaide of Cambridge 12 June 1866 1866 Third cousins once removed George II of Great Britain
Francis, Count of Vendôme Marie of Luxembourg, Countess of Vendôme 1487 1487 Second cousins once removed John I, Count of La Marche
Francis Josias, Duke of Saxe-Coburg-Saalfeld Princess Anna Sophie of Schwarzburg-Rudolstadt 2 January 1723 1723 First cousins once removed Ernest I, Duke of Saxe-Gotha
Infante Francisco de Paula of Spain Princess Luisa Carlotta of Naples and Sicily 12 June 1819 1819 First cousins once removed[70] Charles III of Spain
François d'Orléans, Prince of Joinville Princess Francisca of Brazil 1 May 1843 1843 First cousins once removed Ferdinand I of the Two Sicilies
François de Bourbon, Prince of Conti Louise Marguerite of Lorraine 24 July 1605 1605 First cousins once removed Charles, Duke of Vendôme
François Louis, Prince of Conti Marie Thérèse de Bourbon 22 January 1688 1688 First cousins once removed Henri, Prince of Condé
Franz, Duke of Hohenberg Princess Elisabeth of Luxembourg 9 May 1956 1956 Half-fourth cousins Francis I of the Two Sicilies
Archduke Franz Ferdinand of Austria Sophie, Duchess of Hohenberg 1899 1899 First Cousins several times removed Albert IV, Count of Habsburg
Franz Joseph I of Austria Duchess Elisabeth in Bavaria St. Augustine's Church, Vienna, 24 April 1854 1854 First cousins Maximilian I Joseph of Bavaria
Franz Joseph II, Prince of Liechtenstein Countess Georgina von Wilczek 7 March 1943 1943 Fourth cousins once removed Joseph, 4th Prince Kinsky of Wchinitz and Tettau
Franz Joseph, Prince of Hohenzollern-Emden Princess Maria Alix of Saxony 25 May 1921 1921 Second cousins Ferdinand II of Portugal and Maria II of Portugal
Franz Joseph, 9th Prince of Thurn and Taxis Princess Isabel Maria of Braganza 23 November 1920 1920 Fourth cousins Charles III of Spain
Archduke Franz Salvator of Austria Archduchess Marie Valerie of Austria 31 July 1890 1890 Double third cousins Leopold II, Holy Roman Emperor; Ferdinand I of the Two Sicilies
Frederick I, Duke of Anhalt Princess Antoinette of Saxe-Altenburg 22 April 1854 1854 Second cousins Charles II, Grand Duke of Mecklenburg-Strelitz
Frederick I, Grand Duke of Baden Princess Louise of Prussia 20 September 1856 1856 Third cousins Louis IX, Landgrave of Hesse-Darmstadt
Frederick I of Denmark Anna of Brandenburg
(first wife)
10 April 1502 1502 Second cousins Frederick I, Elector of Brandenburg
Frederick I of Denmark Sophie of Pomerania
(second wife)
9 October 1518 1518 Third cousins once removed Magnus II, Duke of Brunswick-Lüneburg
Frederick I of Sweden Princess Luise Dorothea of Prussia
(first wife)
31 May 1700 1700 First cousins William VI, Landgrave of Hesse-Kassel
Frederick I of Sweden Ulrika Eleonora, Queen of Sweden
(second wife)
24 March 1715 1715 Third cousins once removed Joachim Frederick, Elector of Brandenburg
Frederick I of Württemberg Duchess Augusta of Brunswick-Wolfenbüttel
(first wife)
15 October 1780 1780 Third cousins George I of Great Britain
Frederick I of Württemberg Charlotte, Princess Royal
(second wife)
18 May 1797 1797 Third cousins George I of Great Britain
Frederick I of Prussia Elisabeth Henriette of Hesse-Kassel
(first wife)
1679 1679 First cousins George William, Elector of Brandenburg
Frederick I of Prussia Sophia Charlotte of Hanover
(second wife)
8 October 1684 1684 Second cousins Frederick IV, Elector Palatine
Frederick II of Prussia Elisabeth Christine of Brunswick-Wolfenbüttel-Bevern 12 June 1733 1733 Fourth cousins once removed Ernest I, Duke of Brunswick-Lüneburg
Frederick II of Denmark Sophie of Mecklenburg-Güstrow July 20, 1572 1572 Half-first cousins Frederick I of Denmark
Frederick II, Elector Palatine Dorothea of Denmark, Electress Palatine 18 May 1535 1535 Second cousins once removed Frederick II, Elector of Saxony
Frederick II, Elector of Saxony Margaret of Austria, Electress of Saxony 3 June 1431 1431 Third cousins once removed Albert I of Germany
Frederick II, Grand Duke of Baden Princess Hilda of Nassau 20 September 1885 1885 Third cousins Charles II, Grand Duke of Mecklenburg-Strelitz
Frederick II, Duke of Saxe-Gotha-Altenburg Princess Magdalena Augusta of Anhalt-Zerbst 7 June 1696 1696 First cousins Augustus, Duke of Saxe-Weissenfels
Frederick II, Landgrave of Hesse-Kassel Princess Mary of Great Britain
(first wife)
28 June 1740 1740 Fourth cousins Frederick IV, Elector Palatine
Frederick II, Landgrave of Hesse-Kassel Margravine Philippine of Brandenburg-Schwedt
(second wife)
10 January 1773 1773 Fourth cousins Frederick IV, Elector Palatine
Frederick II Eugene, Duke of Württemberg Margravine Friederike of Brandenburg-Schwedt 2 November 1753 1753 Fourth cousins once removed Joachim Frederick, Elector of Brandenburg
Frederick III, German Emperor Victoria, Princess Royal Chapel Royal, St. James's Palace, 25 January 1858 1858 Third cousins Duke Charles Louis Frederick of Mecklenburg
Frederick III of Denmark Sophie Amalie of Brunswick-Lüneburg 1 October 1643 1643 Second cousins Christian III of Denmark
Frederick III, Duke of Holstein-Gottorp Duchess Marie Elisabeth of Saxony 21 February 1630 1630 Second cousins once removed Christian III of Denmark
Frederick III, Duke of Saxe-Gotha-Altenburg Princess Luise Dorothea of Saxe-Meiningen 17 September 1729 1729 First cousins Frederick I, Duke of Saxe-Gotha-Altenburg
Frederick IV of Denmark Louise of Mecklenburg-Güstrow 5 December 1695 1695 Third cousins Frederick II of Denmark
Frederick IV, Duke of Holstein-Gottorp Hedvig Sophia of Sweden 12 May 1698 1698 First cousins (through Frederick III of Denmark); first cousins once removed (though Frederick III, Duke of Holstein-Gottorp) Frederick III of Denmark; Frederick III, Duke of Holstein-Gottorp
Frederick V, Elector Palatine Elizabeth Stuart, Queen of Bohemia 14 February 1613 1613 Fourth cousins Magnus II, Duke of Mecklenburg
Frederick V, Landgrave of Hesse-Homburg Landgravine Caroline of Hesse-Darmstadt 27 September 1768 1768 Fourth cousins twice removed George I, Landgrave of Hesse-Darmstadt
Frederick V of Denmark Louise of Great Britain
(first wife)
11 December 1743 1743 Third cousins once removed George, Duke of Brunswick-Lüneburg
Frederick V of Denmark Juliana Maria of Brunswick-Wolfenbüttel
(second wife)
8 July 1752 1752 Half-third cousins John Albert II, Duke of Mecklenburg
Frederick VI of Denmark Princess Marie Sophie of Hesse-Kassel Gottorp, 31 July 1790 1790 First cousins Frederick V of Denmark
Frederick VI, Landgrave of Hesse-Homburg Princess Elizabeth of the United Kingdom 7 April 1818 1818 Fourth cousins Albert II, Margrave of Brandenburg-Ansbach
Frederick VII of Denmark Princess Vilhelmine Marie of Denmark
(first wife)
Copenhagen, 1 November 1828 1828 Second cousins Frederick V of Denmark
Frederick VII of Denmark Duchess Caroline Mariane of Mecklenburg
(second wife)
10 June 1841 1841 Third cousins once removed Adolphus Frederick II, Duke of Mecklenburg-Strelitz
Frederick IX of Denmark Princess Ingrid of Sweden Stockholm, 24 May 1935 1935 Double third cousins Oscar I of Sweden; Leopold, Grand Duke of Baden
Frederick the Simple Constance of Aragon, Queen of Sicily 11 April 1361 1361 Second cousins once removed Peter III of Aragon
Frederick, Prince of Wales Princess Augusta of Saxe-Gotha 27 April 1736 1736 Third cousins once removed Johann II, Duke of Saxe-Weimar
Prince Frederick, Duke of York and Albany Princess Frederica Charlotte of Prussia 29 September 1791 1791 Third cousins George I of Great Britain
Prince Frederick of the Netherlands Princess Louise of Prussia 21 May 1825 1825 First cousins Frederick William II of Prussia
Prince Frederick of Prussia Princess Luise of Anhalt-Bernburg 21 November 1817 1817 Fourth cousins once removed George I of Great Britain
Prince Frederick of Schaumburg-Lippe Princess Louise of Denmark
(first wife)
5 May 1896 1896 Second cousins Prince William of Hesse-Kassel
Prince Frederick of Schaumburg-Lippe Princess Antoinette of Anhalt
(second wife)
26 May 1909 1909 Second cousins Prince William of Hesse-Kassel
Prince Frederick of Württemberg Princess Catherine of Württemberg 20 November 1845 1845 First cousins Frederick I of Württemberg
Frederick, Duke of Württemberg-Neuenstadt Clara Augusta of Brunswick-Lüneburg 7 June 1653 1653 Fourth cousins once removed John Cicero, Elector of Brandenburg
Frederick, Duke of Saxe-Altenburg Duchess Charlotte Georgine of Mecklenburg-Strelitz 3 September 1785 1785 Second cousins Ernest Frederick I, Duke of Saxe-Hildburghausen
Frederick, Prince of Hohenzollern Princess Margarete Karola of Saxony 2 June 1920 1920 Second cousins Ferdinand II of Portugal and Maria II of Portugal
Prince Frederick of Hohenzollern-Sigmaringen Princess Louise of Thurn and Taxis 21 June 1879 1879 Second cousins once removed Charles Louis, Hereditary Prince of Baden
Frederick, Margrave of Brandenburg-Bayreuth Wilhelmine of Prussia, Margravine of Brandenburg-Bayreuth November 20, 1731 1731 Fourth cousins twice removed John George, Elector of Brandenburg
Frederick Anton, Prince of Schwarzburg-Rudolstadt Princess Sophia Wilhelmina of Saxe-Coburg-Saalfeld 8 February 1720 1720 First cousins once removed Ernest I, Duke of Saxe-Gotha
Frederick August I, Duke of Oldenburg Princess Ulrike Friederike Wilhelmine of Hesse-Kassel 21 November 1752 1752 Fourth cousins once removed Joachim Frederick, Elector of Brandenburg
Prince Frederick Augustus of Anhalt-Dessau Princess Marie Luise Charlotte of Hesse-Kassel 11 September 1832 1832 Fifth cousins Albert II, Margrave of Brandenburg-Ansbach
Frederick Augustus II, Grand Duke of Oldenburg Princess Elisabeth Anna of Prussia
(first wife)
18 February 1878 1878 Third cousins Charles II, Grand Duke of Mecklenburg-Strelitz
Frederick Augustus II, Grand Duke of Oldenburg Duchess Elisabeth Alexandrine of Mecklenburg-Schwerin
(second wife)
24 October 1896 1896 Third cousins Charles II, Grand Duke of Mecklenburg-Strelitz
Frederick Augustus II of Saxony Archduchess Marie Caroline of Austria 7 October 1819 1819 Second cousins Francis I, Holy Roman Emperor and Maria Theresa of Austria
Frederick Augustus III of Saxony Archduchess Louise of Austria 21 November 1891 1891 Double third cousins once removed Leopold II, Holy Roman Emperor; Charles IV of Spain
Prince Frederick Charles of Hesse Princess Margaret of Prussia 25 January 1893 1893 Double second cousins Frederick William III of Prussia; Charles Frederick, Grand Duke of Saxe-Weimar-Eisenach
Frederick Charles, Duke of Württemberg-Winnental Eleonore Juliane of Brandenburg-Ansbach 31 October 1682 1682 Second cousins once removed John George, Elector of Brandenburg
Frederick Christian, Elector of Saxony Duchess Maria Antonia of Bavaria 13 June 1747 1747 First cousins Joseph I, Holy Roman Emperor
Frederick Christian II, Duke of Schleswig-Holstein-Sonderburg-Augustenburg Princess Louise Auguste of Denmark 27 May 1786 1786 Third cousins once removed Christian V of Denmark
Frederick Francis I, Grand Duke of Mecklenburg-Schwerin Princess Louise of Saxe-Gotha-Altenburg 1 June 1775 1775 Third cousins Ernest I, Duke of Saxe-Gotha
Frederick Francis II, Grand Duke of Mecklenburg-Schwerin Princess Anna of Hesse and by Rhine
(second wife)
4 July 1864 1864 Second cousins Frederick William II of Prussia
Frederick Francis II, Grand Duke of Mecklenburg-Schwerin Princess Marie of Schwarzburg-Rudolstadt
(third wife)
4 July 1868 1868 Third cousins Louis IX, Landgrave of Hesse-Darmstadt
Frederick Francis III, Grand Duke of Mecklenburg-Schwerin Grand Duchess Anastasia Mikhailovna of Russia 24 January 1879 1879 Second cousins; second cousins once removed Frederick William III of Prussia; Paul I of Russia
Frederick Francis IV, Grand Duke of Mecklenburg-Schwerin Princess Alexandra of Hanover 7 June 1904 1904 Fourth cousins once removed Duke Louis of Mecklenburg-Schwerin
Frederick Louis, Hereditary Grand Duke of Mecklenburg-Schwerin Princess Caroline Louise of Saxe-Weimar-Eisenach 1 July 1810 1810 Fifth cousins once removed Johann II, Duke of Saxe-Weimar
Frederick William I of Prussia Princess Sophia Dorothea of Hanover 28 November 1706 1706 First cousins Ernest Augustus, Elector of Brunswick-Lüneburg and Sophia of the Palatinate
Frederick William II of Prussia Elisabeth Christine of Brunswick-Wolfenbüttel Schloss Salzdahlum, 14 July 1765 1765 Double first cousins Frederick William I of Prussia and Princess Sophia Dorothea of Hanover; Ferdinand Albert II, Duke of Brunswick-Lüneburg and Duchess Antoinette of Brunswick-Wolfenbüttel
Frederick William III of Prussia Louise of Mecklenburg-Strelitz 24 December 1793 1793 Second cousins Louis VIII, Landgrave of Hesse-Darmstadt
Frederick William IV of Prussia Elisabeth Ludovika of Bavaria 29 November 1823 1823 Second cousins Louis IX, Landgrave of Hesse-Darmstadt
Frederick William, Grand Duke of Mecklenburg-Strelitz Princess Augusta of Cambridge 28 June 1843 1843 First cousins through Prince Frederick of Hesse-Kassel; second cousins through Duke Charles Louis Frederick of Mecklenburg Prince Frederick of Hesse-Kassel; Duke Charles Louis Frederick of Mecklenburg
Frederick William, Duke of Brunswick-Wolfenbüttel Princess Marie of Baden 1 November 1802 1802 Half-third cousins once removed John Frederick, Margrave of Brandenburg-Ansbach
Prince Frederick William of Hesse-Kassel Grand Duchess Alexandra Nikolaevna of Russia
(first wife)
28 January 1844 1844 Half-fourth cousins Adolphus Frederick II, Duke of Mecklenburg-Strelitz
Prince Frederick William of Hesse-Kassel Princess Anna of Prussia
(second wife)
26 May 1853 1853 Half-fourth cousins Adolphus Frederick II, Duke of Mecklenburg-Strelitz
Prince Frederick William of Solms-Braunfels Frederica of Mecklenburg-Strelitz 10 December 1798 1798 Fourth cousins twice removed Johann VII, Duke of Mecklenburg
Frederick William, Margrave of Brandenburg-Schwedt Princess Sophia Dorothea of Prussia 10 November 1734 1734 First cousins once removed Frederick William, Elector of Brandenburg
Duke Friedrich of Württemberg Princess Marie of Wied 11 November 1993 1993 Sixth cousins once removed Frederick II Eugene, Duke of Württemberg
Friedrich II, Duke of Anhalt Princess Marie of Baden 2 July 1889 1889 Double third cousins once removed Frederick William II of Prussia; Charles II, Grand Duke of Mecklenburg-Strelitz
Friedrich, Prince of Waldeck and Pyrmont Princess Bathildis of Schaumburg-Lippe 9 August 1895 1895 Second cousins George I, Prince of Waldeck and Pyrmont
Prince Friedrich of Saxe-Meiningen Countess Adelaide of Lippe-Biesterfeld 24 April 1889 1889 Second cousins once removed Karl Ludwig, Prince of Hohenlohe-Langenburg
Duke Friedrich August of Oldenburg Princess Marie Cécile of Prussia 3 December 1965 1965 Fourth cousins once removed Frederick William III of Prussia
Friedrich Christian, Margrave of Meissen Princess Elisabeth Helene of Thurn and Taxis 16 June 1923 1923 Third cousins Maximilian I Joseph of Bavaria
Prince Friedrich Christian of Schaumburg-Lippe Princess Marie Louise of Schleswig-Holstein-Sonderburg-Glücksburg 15 October 1962 1962 Second cousins George William, Prince of Schaumburg-Lippe
Friedrich Ferdinand, Duke of Schleswig-Holstein Princess Karoline Mathilde of Schleswig-Holstein-Sonderburg-Augustenburg 19 March 1885 1885 Third cousins once removed Frederick V of Denmark
Prince Friedrich Ferdinand of Schleswig-Holstein-Sonderburg-Glücksburg Duchess Anastasia of Mecklenburg-Schwerin 1 September 1943 1943 Second cousins once removed Friedrich Wilhelm, Duke of Schleswig-Holstein-Sonderburg-Glücksburg
Friedrich Günther, Prince of Schwarzburg Princess Sophie of Saxe-Weimar-Eisenach 7 March 1938 1938 Fifth cousins Frederick William II of Prussia
Friedrich Günther, Prince of Schwarzburg-Rudolstadt Auguste of Anhalt-Dessau 15 April 1816 1816 First cousins Frederick V, Landgrave of Hesse-Homburg
Friedrich Josias, Prince of Saxe-Coburg and Gotha Countess Viktoria-Luise of Solms-Baruth 25 January 1942 1942 First cousins Friedrich Ferdinand, Duke of Schleswig-Holstein
Prince Friedrich Karl of Prussia Princess Maria Anna of Anhalt-Dessau 29 November 1854 1854 Second cousins Frederick William II of Prussia
Prince Friedrich Sigismund of Prussia Princess Marie Louise of Schaumburg-Lippe April 27, 1916 1916 Third cousins once removed Frederick William III of Prussia
Friedrich Wilhelm II, Duke of Saxe-Altenburg Magdalene Sibylle of Saxony 1 October 1652 1652 Second cousins William, Duke of Jülich-Cleves-Berg
Friedrich Wilhelm, Prince of Wied Princess Guda of Waldeck and Pyrmont 9 September 1958 1958 Second cousins once removed George Victor, Prince of Waldeck and Pyrmont
Friedrich Wilhelm, Prince of Hohenzollern Princess Margarita of Leiningen 5 January 1951 1951 Half-fourth cousins twice removed Charles Frederick, Grand Duke of Baden
Infante Gabriel of Spain Infanta Maria Ana Vitória of Portugal 12 April 1785 1785 First cousins once removed Philip V of Spain
Prince Gabriel of Bourbon-Two Sicilies Princess Malgorzata Izabella Czartoryska 25 August 1927 1927 Third cousins once removed Ferdinand I of the Two Sicilies
Prince Gaetan, Count of Girgenti Isabella, Princess of Asturias 13 May 1868 1868 First cousins once removed Francis I of the Two Sicilies
Gaius Caesar Livilla 1 BC 1 BC Second cousins Gaius Octavius and Atia Balba Caesonia
Gaston, Duke of Orléans Marie de Bourbon, Duchess of Montpensier
(first wife)
6 August 1626 1626 Fourth cousins John VIII, Count of Vendôme
Gaston, Duke of Orléans Marguerite of Lorraine
(second wife)
2–3 January 1632 1632 Third cousins once removed Philip I of Castile and Joanna of Castile
Gaston, Count of Marsan Marie Louise de Rohan 4 June 1736 1736 Third cousins Charles I, Duke of Elbeuf
Gaston, Count of Eu Isabel, Princess Imperial of Brazil 15 October 1864 1864 Second cousins Ferdinand I of the Two Sicilies
Geoffrey II, Duke of Brittany Constance, Duchess of Brittany July 1181 1181 Half-second cousins; third cousins Henry I of England; Malcolm III of Scotland
Georg, Duke of Saxe-Altenburg Duchess Marie Louise of Mecklenburg-Schwerin 7 October 1825 1825 Half-third cousins once removed Adolphus Frederick II, Duke of Mecklenburg-Strelitz
Georg II, Duke of Saxe-Meiningen Princess Charlotte of Prussia
(first wife)
18 May 1850 1850 Second cousins Frederick William II of Prussia
Georg II, Duke of Saxe-Meiningen Princess Feodora of Hohenlohe-Langenburg
(second wife)
23 October 1858 1858 Second cousins Christian Albrecht, Prince of Hohenlohe-Langenburg
Georg, Prince of Schaumburg-Lippe Princess Marie Anne of Saxe-Altenburg 16 April 1882 1882 Fifth cousins George II of Great Britain
Prince Georg of Bavaria Archduchess Isabella of Austria 10 February 1912 1912 Third cousins once removed Leopold II, Holy Roman Emperor
Georg Alexander, Duke of Mecklenburg Archduchess Ilona of Austria 20 February 1946 1946 Fifth cousins once removed Frederick II Eugene, Duke of Württemberg
Georg Donatus, Hereditary Grand Duke of Hesse Princess Cecilie of Greece and Denmark 2 February 1931 1931 First cousins once removed Louis IV, Grand Duke of Hesse
Georg Friedrich, Prince of Prussia Princess Sophie of Isenburg Potsdam, 25 August 2011 2011 Sixth cousin once-removed Charles II, Grand Duke of Mecklenburg
George Plantagenet, 1st Duke of Clarence Lady Isabel Neville Calais, France, 11 July 1469 1469 First cousins once removed Ralph de Neville, 1st Earl of Westmorland and Joan Beaufort
George I of Greece Olga Constantinovna of Russia 27 October 1867 1867 Fifth cousins once removed George I of Great Britain
George I of Great Britain Duchess Sophia Dorothea of Brunswick-Celle 22 November 1682 1682 First cousins George, Duke of Brunswick-Lüneburg
George II of Great Britain Caroline of Ansbach 22 August 1705 1705 Third cousins once removed John George, Elector of Brandenburg
George II of Greece Princess Elisabeth of Romania Bucharest, 27 February 1921 1921 Second cousins Queen Victoria
George II, Landgrave of Hesse-Darmstadt Sophia Eleonore of Saxony April 1, 1627 1627 Half-first cousins once removed John George, Elector of Brandenburg
George III of the United Kingdom Charlotte of Mecklenburg-Strelitz 08 Sept 1761 1761 Second cousins twice removed; third cousins Adolf Frederick I, Duke of Mecklenburg; Ernest I, Duke of Saxe-Gotha
George IV of the United Kingdom Princess Caroline of Brunswick-Wolfenbüttel Chapel Royal, St. James's Palace, 8 April 1795 1795 First cousins Frederick, Prince of Wales and Princess Augusta of Saxe-Gotha-Altenburg
George V of the United Kingdom Princess Mary of Teck Chapel Royal, St. James's Palace, 6 July 1893 1893 Double second cousins once removed George III of the United Kingdom; Landgrave Frederick III of Hesse-Kassel
George V of Hanover Marie of Saxe-Altenburg 18 February 1843 1843 First cousins once removed Charles II, Grand Duke of Mecklenburg-Strelitz
George VI of the United Kingdom Elizabeth Bowes-Lyon 26 April 1923 1923 13th cousins Henry VII of England
George, King of Saxony Infanta Maria Anna of Portugal 11 May 1859 1859 Third cousins once removed Francis I, Holy Roman Emperor and Maria Theresa of Austria
George, Duke of Saxony Barbara Jagiellon 21 November 1496 1496 Second cousins twice removed Algirdas
George, Grand Duke of Mecklenburg-Strelitz Princess Marie of Hesse-Kassel 12 August 1817 1817 Fourth cousins Albert II, Margrave of Brandenburg-Ansbach
Prince George, Duke of Kent Princess Marina of Greece and Denmark Westminster Abbey 29 November 1934 1934 Second cousins Christian IX of Denmark
George Maximilianovich, 6th Duke of Leuchtenberg Duchess Therese Petrovna of Oldenburg 12 May 1879 1879 Second cousins Paul I of Russia
Grand Duke George Mikhailovich of Russia Princess Maria of Greece and Denmark 30 April 1900 1900 First cousins once removed Nicholas I of Russia
George Victor, Prince of Waldeck and Pyrmont Princess Helena of Nassau
(first wife)
26 September 1853 1853 Second cousins Charles Christian, Prince of Nassau-Weilburg
George Victor, Prince of Waldeck and Pyrmont Princess Louise of Schleswig-Holstein-Sonderburg-Glücksburg
(second wife)
29 April 1891 1891 First cousins once removed George I, Prince of Waldeck and Pyrmont
Prince George William of Hesse-Darmstadt Countess Maria Louise Albertine of Leiningen-Falkenburg-Dagsburg 16 March 1748 1748 Third cousins Christian I, Count Palatine of Birkenfeld-Bischweiler
Gian Galeazzo Visconti, Duke of Milan Caterina Visconti Church of San Giovanni in Conca, 2 October 1380 1380 First cousins Stefano Visconti
Gottfried, Prince of Hohenlohe-Langenburg Princess Margarita of Greece and Denmark 20 April 1931 1931 Second cousins once removed (through Queen Victoria); third cousins (through Nicholas I of Russia) Queen Victoria; Nicholas I of Russia
Archduke Gottfried of Austria Princess Dorothea of Bavaria 2 August 1938 1938 Second cousins once removed Leopold II, Grand Duke of Tuscany
Prince Guillaume of Luxembourg Princess Sibilla of Luxembourg 8 September 1994 1994 Fifth cousins once removed Charles IV of Spain; Francis I of the Two Sicilies; Francis, Duke of Saxe-Coburg-Saalfeld; Frederick William, Prince of Nassau-Weilburg
Gustaf V of Sweden Victoria of Baden 20 September 1881 1881 Third cousins once removed Charles II, Grand Duke of Mecklenburg-Strelitz
Gustaf VI Adolf of Sweden Princess Margaret of Connaught
(first wife)
15 June 1905 1905 Third cousins Frederick William III of Prussia
Gustaf VI Adolf of Sweden Louise Mountbatten
(second wife)
3 November 1923 1923 Fourth cousins Frederick William II of Prussia
Prince Gustaf Adolf, Duke of Västerbotten Princess Sibylla of Saxe-Coburg and Gotha 20 October 1932 1932 Second cousins Queen Victoria
Gustav III of Sweden Sophia Magdalena of Denmark 1 October 1766 1766 Second cousins George I of Great Britain
Gustav, Prince of Vasa Princess Louise Amelie of Baden 9 November 1830 1830 First cousins Charles Louis, Hereditary Prince of Baden
Gustavus Adolphus of Sweden Maria Eleonora of Brandenburg 25 November 1620 1620 Third cousins once removed Christian I of Denmark
Haakon VII of Norway Princess Maud of Wales Buckingham Palace, 22 July 1896 1896 First cousins Christian IX of Denmark
Hadrian Vibia Sabina 100 100 Second cousins once removed Traianus
Hans-Adam I, Prince of Liechtenstein Erdmuthe Maria Theresia of Dietrichstein 16 February 1681 1681 First cousins Maximilian, Prince of Dietrichstein
Hans-Adam II, Prince of Liechtenstein Marie Aglaë, Countess Kinsky von Wchinitz und Tettau 30 July 1967 1967 Second cousins once removed Ferdinand Bonaventura, 7th Prince Kinsky of Wchinitz and Tettau
Prince Harald of Denmark Princess Helena Adelaide of Schleswig-Holstein-Sonderburg-Glücksburg 28 April 1909 1909 Second cousins Friedrich Wilhelm, Duke of Schleswig-Holstein-Sonderburg-Glücksburg
Prince Heinrich I Reuss of Köstritz Duchess Woizlawa Feodora of Mecklenburg 15 September 1939 1939 Fourth cousins Paul I of Russia
Heinrich XXII, Prince Reuss of Greiz Princess Ida of Schaumburg-Lippe 8 October 1872 1872 Second cousins once removed Charles Christian, Prince of Nassau-Weilburg
Heinrich XXVII, Prince Reuss Younger Line Princess Elise of Hohenlohe-Langenburg 11 November 1884 1884 Third cousins Frederick II Eugene, Duke of Württemberg
Prince Heinrich XXXIII Reuss of Köstritz Princess Victoria Margaret of Prussia 17 May 1913 1913 Fourth cousins Frederick William II of Prussia
Prince Heinrich XXXV Reuss of Köstritz (son of Heinrich VII, Prince Reuss of Köstritz) Princess Maria of Saxe-Altenburg (daughter of Prince Albert of Saxe-Altenburg) 20 April 1911 1911 Second cousins once removed Charles Frederick, Grand Duke of Saxe-Weimar-Eisenach
Princess Helena of the United Kingdom Prince Christian of Schleswig-Holstein Windsor Castle, 5 July 1866 1866 Third cousins Frederick, Prince of Wales
Henri, Count of Chambord Archduchess Maria Theresa of Austria-Este 16 November 1846 1846 Second cousins Victor Amadeus III of Sardinia
Henri d'Orléans, Duke of Aumale Princess Maria Carolina of Bourbon-Two Sicilies 25 November 1844 1844 First cousins Ferdinand I of the Two Sicilies
Henri, Count of Paris Princess Isabelle of Orléans-Braganza 8 April 1931 1931 Double third cousins Louis Philippe I; Pedro I of Brazil
Henri d'Orléans, Count of Paris Duchess Marie Thérèse of Württemberg 5 July 1957 1957 Double fourth cousins Louis Philippe I; Francis I of the Two Sicilies
Henri, Prince of Condé Marie of Cleves, Princess of Condé
(first wife)
1572 1572 First cousins Charles, Duke of Vendôme
Henri, Prince of Condé Charlotte Catherine de La Trémoille
(second wife)
6 March 1586 1586 Second cousins once removed Guillaume, seigneur de Montmorency
Henri, Prince of Condé Charlotte Marguerite de Montmorency 1609 1609 First cousins once removed Anne de Montmorency
Henri Jules, Prince of Condé Anne Henriette of Bavaria 11 December 1663 1663 Fourth cousins Charles, Duke of Vendôme
Princess Henrietta Anne of England Philippe I, Duke of Orléans 31 March 1661 1661 First cousins Henry IV of France
Henry I, Duke of Guise Catherine of Cleves 4 October 1570 1570 Second cousins Francis, Count of Vendôme
Henry I of Castile Mafalda of Portugal 1215 1215 Second cousins once removed Ramon Berenguer III, Count of Barcelona and Douce I, Countess of Provence
Henry I of Navarre Blanche of Artois February 1269 1269 Double third cousins once removed Theobald II, Count of Champagne; Alfonso VII of León
Henry I of England Matilda of Scotland
(first wife)
11 November 1100 1100 Seventh cousins Alfred the Great
Henry I of England Adeliza of Louvain
(second wife)
24 January 1121 1121 Fourth cousins Mathilde von Sachsen
Henry II of England Eleanor of Aquitaine 18 May 1152 1152 Half-third cousins Ermengarde of Anjou
Henry II, Duke of Lorraine Catherine de Bourbon
(first wife)
31 January 1599 1599 Second cousins once removed Charles, Count of Angoulême
Henry II, Duke of Lorraine Margherita Gonzaga, Duchess of Lorraine
(second wife)
24 April 1606 1606 Third cousins Philip I of Castile and Joanna of Castile
Henry III of England Eleanor of Provence 14 January 1236 1236 Fourth cousins Humbert II, Count of Savoy
Henry IV of England Mary de Bohun
(first wife)
27 July 1380 1380 Second cousins (through Henry, 3rd Earl of Lancaster);
Third cousins (through Edward I of England
Henry, 3rd Earl of Lancaster; Edward I of England
Henry IV of England Joan of Navarre
(second wife)
7 February 1403 1403 Third cousins Philip IV of France and Joan I of Navarre
Henry IV of France Margaret of Valois
(first wife)
Notre Dame Cathedral, 18 August 1572 1572 Second cousins Charles, Count of Angoulême
Henry IV of France Marie de' Medici
(second wife)
17 December 1600 1600 Fourth cousins Gaston IV, Count of Foix and Eleanor of Navarre
Henry IV of Castile Blanche II of Navarre
(first wife)
1440 1440 First cousins Ferdinand I of Aragon
Henry IV of Castile Joan of Portugal
(second wife)
21 May 1455 1455 First cousins (though Ferdinand I of Aragon); second cousins (through John of Gaunt) Ferdinand I of Aragon; John of Gaunt
Henry V of England Catherine of Valois 2 June 1420 1420 Third cousins once removed Charles, Count of Valois
Henry VI of England Margaret of Anjou Titchfield, Hampshire, 23 April 1445 1445 Third cousins John II of France
Henry VII of England Elizabeth of York Westminster Abbey, 18 January 1486 1486 Third cousins John of Gaunt, 1st Duke of Lancaster and Katherine de Roet
Henry VIII of England Catherine of Aragon
(first wife)
Greenwich Palace, 11 June 1509
(annulled 23 May 1533)
1509 Third cousins once removed (through John of Gaunt, 1st Duke of Lancaster);
Double fourth cousins (through Peter of Castile)
John of Gaunt, 1st Duke of Lancaster; Peter of Castile
Henry VIII of England Anne Boleyn
(second wife)
Westminster Abbey, 25 January 1533
(annulled 17 May 1536)
1533 Seventh cousins once removed Edward I of England
Henry VIII of England Jane Seymour
(third wife)
York Place, 30 May 1536 1536 Fifth cousins Philippa, 5th Countess of Ulster
Henry VIII of England Anne of Cleves
(fourth wife)
Greenwich Palace, 6 January 1540
(annulled 9 July 1540)
1540 Ninth cousins Edward I of England
Henry VIII of England Catherine Howard
(fifth wife)
Oatlands Palace, 28 July 1540
(annulled 23 November 1541)
1540 Seventh cousins once removed Edward I of England
Henry VIII of England Catherine Parr
(sixth wife)
Hampton Court Palace, London, 12 July 1543 1543 Third cousins (through Sir Richard Wydeville);
Third cousins once removed (through Lady Joan Beaufort)
Double fourth cousins once removed (through Thomas Holland, 2nd Earl of Kent and John of Gaunt, 1st Duke of Lancaster)
Sir Richard Wydeville; Lady Joan Beaufort; Thomas Holland, 2nd Earl of Kent; John of Gaunt, 1st Duke of Lancaster
Henry the Young King Margaret of France, Queen of England and Hungary 27 August 1172 1172 Fourth cousins Robert I, Duke of Burgundy
Prince Henry of the Netherlands Princess Amalia of Saxe-Weimar-Eisenach
(first wife)
19 May 1853 1853 Fourth cousins Frederick William I of Prussia
Prince Henry of the Netherlands Princess Marie of Prussia
(second wife)
23 August 1878 1878 First cousins twice removed (though Paul I of Russia); second cousins once removed (through Frederick William II of Prussia) Paul I of Russia; Frederick William II of Prussia
Prince Henry, Count of Bardi Princess Maria Luisa of Bourbon-Two Sicilies
(first wife)
25 November 1873 1873 Half-first cousins once removed Francis I of the Two Sicilies
Prince Henry, Count of Bardi Infanta Adelgundes, Duchess of Guimarães
(second wife)
15 October 1876 1876 Second cousins once removed Charles IV of Spain
Henry, Duke of Villena Infanta Catherine, Duchess of Villena November 1418 1418 First cousins John I of Castile
Prince Henry of Prussia Princess Wilhelmina of Hesse-Kassel 25 June 1752 1752 Fourth cousins once removed Louis V, Landgrave of Hesse-Darmstadt
Henry the Lion Clementia of Zähringen
(first wife)
1147 1147 Third cousins once removed Bernard II, Duke of Saxony
Henry the Lion Matilda of England, Duchess of Saxony
(second wife)
1 February 1168 1168 Third cousins twice removed ;fourth cousins once removed Baldwin IV, Count of Flanders; Richard II, Duke of Normandy
Henry Julius, Duke of Brunswick-Lüneburg Dorothea of Saxony
(first wife)
26 September 1585 1585 Third cousins John Cicero, Elector of Brandenburg
Henry Julius, Duke of Brunswick-Lüneburg Elizabeth of Denmark, Duchess of Brunswick-Wolfenbüttel
(second wife)
19 April 1590 1590 Second cousins once removed Joachim I Nestor, Elector of Brandenburg
Archduke Hubert Salvator of Austria Princess Rosemary of Salm-Salm 25 November 1926 1926 Fourth cousins Leopold II, Holy Roman Emperor
Prince Hubertus of Prussia Princess Magdalena Reuss of Köstritz 5 June 1943 1943 Third cousins Heinrich LXIII, Prince Reuss of Köstritz
Princess Iniga of Thurn and Taxis Prince Eberhard von Urach (son of Wilhelm Karl, Duke of Urach) 18 May 1948 1948 Second cousins once removed Duke Maximilian Joseph in Bavaria
Princess Irene of Hesse and by Rhine Prince Henry of Prussia 24 May 1888 1888 First cousins Queen Victoria
Princess Isabel Alfonsa of Bourbon-Two Sicilies Jan Kanty Zamoyski 9 March 1929 1929 First cousins once removed Prince Francis, Count of Trapani
Isabella I of Castile Ferdinand II of Aragon Palacio de los Vivero, Valladolid, 19 October 1469 1469 Second cousins John I of Castile
Isabella II of Spain Francis, Duke of Cádiz 10 October 1846 1846 Double first cousins Charles IV of Spain and Princess Maria Luisa of Parma; Francis I of the Two Sicilies and Infanta María Isabella of Spain
Jacqueline, Countess of Hainaut John, Duke of Touraine
(first husband)
6 August 1415 1415 Second cousins John II of France
Jacqueline, Countess of Hainaut John IV, Duke of Brabant
(second husband)
10 March 1418 1418 First cousins Philip the Bold
Jacqueline, Countess of Hainaut Humphrey, Duke of Gloucester
(third husband)
15 October 1423 1423 Third cousins William I, Count of Hainaut
Jacques of Savoy, Count of Romont Marie of Luxembourg, Countess of Vendôme 1484 1484 Second cousins once removed[70] John I, Count of La Marche
James I of England Anne of Denmark Old Bishop's Palace in Oslo, 23 November 1589 1589 Third cousins once removed Christian I of Denmark
James I of Scotland Joan Beaufort, Queen of Scots 12 February 1424 1424 Fifth cousins once removed John Fitzgeoffrey
James I of Aragon Eleanor of Castile 1221 1221 Second cousins Alfonso VII of León
James II of England Anne Hyde
(first wife)
3 September 1660 1660 Ninth cousins once removed Eleanor of Lancaster
James II of England Mary of Modena
(second wife)
21 November 1673 1673 Third cousins once removed; Fourth cousins twice removed Cosimo I de' Medici, Grand Duke of Tuscany; Philip I of Castile and Joanna of Castile
James II of Scotland Mary of Guelders 3 July 1449 1449 Fourth cousins once removed William I, Count of Hainaut
James II, Count of Urgell Isabella of Aragon, Countess of Urgell 29 June 1407 1407 First cousins once removed Alfonso IV of Aragon
James II of Aragon Isabella of Castile, Queen of Aragon 1 December 1291 1291 First cousins once removed James I of Aragon
James III of Majorca Constance of Aragon, Queen of Majorca 24 September 1336 1336 Second cousins once removed James I of Aragon
James III of Scotland Margaret of Denmark, Queen of Scotland July 1469 1469 Fifth cousins Louis IV, Holy Roman Emperor
James IV of Scotland Margaret Tudor Holyrood Abbey, Edinburgh, 8 August 1503 1503 Third cousins John Beaufort, 1st Earl of Somerset
James V of Scotland Madeleine of Valois
(first wife)
1 January 1537 1537 Third cousins once removed Adolph I, Duke of Cleves
James V of Scotland Mary of Guise
(second wife)
May 18, 1538 1538 Third cousins Arnold, Duke of Guelders
James Francis Edward Stuart Maria Clementina Sobieska 3 September 1719 1719 Fourth cousins once removed Ferdinand I, Holy Roman Emperor
Jean, Grand Duke of Luxembourg Princess Joséphine Charlotte of Belgium 9 April 1953 1953 Second cousins once removed Miguel I of Portugal
Prince Jean, Duke of Guise Princess Isabelle of Orléans 30 October 1899 1899 First cousins Ferdinand Philippe, Duke of Orléans
Prince Joachim of Prussia Princess Marie-Auguste of Anhalt 11 March 1916 1916 Double fourth cousins Frederick William II of Prussia; Charles II, Grand Duke of Mecklenburg-Strelitz
Joachim I Nestor, Elector of Brandenburg Elizabeth of Denmark, Electress of Brandenburg 10 April 1502 1502 Double second cousins once removed Frederick I, Elector of Brandenburg; Frederick I, Elector of Saxony
Joachim II Hector, Elector of Brandenburg Magdalena of Saxony
(first wife)
6 November 1524 1524 Second cousins once removed Frederick II, Elector of Saxony
Joachim II Hector, Elector of Brandenburg Hedwig Jagiellon, Electress of Brandenburg
(second wife)
1 September 1535 1535 Second cousins once removed Albert II of Germany
Joan of Acre Gilbert de Clare, 7th Earl of Gloucester 30 April 1290 1290 Half-fifth cousins Henry I of England
Joanna I of Naples Andrew, Duke of Calabria
(first husband)
26 September 1333 1333 Second cousins Charles II of Naples
Joanna I of Naples Louis I of Naples
(second husband)
22 August 1347 1347 First cousins (through Charles, Count of Valois); first cousins once removed (through Charles II of Naples) Charles, Count of Valois; Charles II of Naples
Joanna I of Naples James IV of Majorca
(third husband)
September 26, 1363 1363 Second cousins once removed Peter III of Aragon
João I, Duke of Braganza Catherine, Duchess of Braganza 1563 1563 First cousins Jaime, Duke of Braganza
João of Braganza, Marquis of Montemor-o-Novo Isabel of Noronha 25 July 1460 1460 Half-third cousins Peter I of Portugal
Prince Johann von Nepomuk of Thurn and Taxis (father of Prince Friedrich of Thurn and Taxis) Princess Maria Julia of Lobkowicz Second cousins Ferdinand Bonaventura, 7th Prince Kinsky of Wchinitz and Tettau
Prince Johann Georg of Hohenzollern Princess Birgitta of Sweden 25 May 1961 1961 Fifth cousins Francis, Duke of Saxe-Coburg-Saalfeld
Prince Johann Georg of Saxony Duchess Maria Isabella of Württemberg
(first wife)
5 April 1894 1894 Double third cousins once removed Leopold II, Holy Roman Emperor; Ferdinand I of the Two Sicilies
Prince Johann Georg of Saxony Princess Maria Immaculata of Bourbon-Two Sicilies
(second wife)
30 October 1906 1906 Double third cousins once removed Leopold II, Holy Roman Emperor; Charles IV of Spain
Johann Nepomuk Karl, Prince of Liechtenstein Countess Maria Josepha of Harrach-Rohrau 19 March 1744 1744 First cousins Anton Florian, Prince of Liechtenstein
Johann Wilhelm, Elector Palatine Archduchess Maria Anna Josepha of Austria
(first wife)
25 October 1678 1678 Second cousins William V, Duke of Bavaria
Johann Wilhelm, Elector Palatine Anna Maria Luisa de' Medici
(second wife)
29 April 1691 1691 Third cousins once removed Albert V, Duke of Bavaria
Prince Johannes Heinrich of Saxe-Coburg and Gotha Princess Mathilde of Saxony 12 November 1968 1968 Third cousins Leopold II, Grand Duke of Tuscany
John, King of Denmark Christina of Saxony 6 September 1478 1478 Fourth cousins Stephen II, Duke of Bavaria
John, King of England Isabella, Countess of Gloucester
(first wife)
8 September 1176 1176 Half-second cousins Henry II of England
John, King of England Isabella of Angoulême
(second wife)
24 August 1200 1200 Fourth cousins once removed Roger de Montgomerie, 1st Earl of Shrewsbury
John I of Portugal Philippa of Lancaster 11 February 1387 1387 Fourth cousins once removed James I of Aragon
John I of Aragon Martha of Armagnac
(first wife)
24 June 1373 1373 Fourth cousins once removed Louis VIII of France
John I of Aragon Violant of Bar
(second wife)
2 February 1380 1380 Third cousins once removed Charles II of Naples
John I of Castile Eleanor of Aragon, Queen of Castile
(first wife)
18 June 1375 1375 Third cousins once removed Peter III of Aragon
John I of Castile Beatrice of Portugal
(second wife)
14 May 1383 1383 Second cousins once removed Manuel of Castile
John I, Count of Holland Elizabeth of Rhuddlan 8 January 1297 1297 Third cousins twice removed Henry II of England
John II of Portugal Eleanor of Viseu 22 January 1470 1470 First cousins Edward of Portugal
John II of Castile Maria of Aragon, Queen of Castile
(first wife)
1418 1418 First cousins John I of Castile
John II of Castile Isabella of Portugal, Queen of Castile
(second wife)
22 July 1447 1447 First cousins once removed John of Gaunt
John II of Aragon and Navarre Blanche I of Navarre
(first wife)
6 November 1419 1419 First cousins once removed Henry II of Castile
John II of Aragon and Navarre Juana Enríquez
(second wife)
1 April 1444 1444 Second cousins once removed Alfonso XI of Castile
John II, Marquess of Montferrat Isabella of Majorca 4 September 1358 1358 Third cousins once removed James I of Aragon
John II, Duke of Brabant Margaret of England, Duchess of Brabant 8 July 1290 1290 Sixth cousins William the Conqueror
John II, Duke of Brittany Beatrice of England 22 January 1260 1260 Fourth cousins Alfonso VII of León
John III of Portugal Catherine of Austria 10 February 1525 1525 First cousins Ferdinand II of Aragon and Isabella I of Castile
John IV, Marquess of Montferrat Margaret of Savoy, Countess of Saint-Pol December 1458 1458 Second cousins once removed Amadeus VI, Count of Savoy
John IV, Duke of Brittany Mary of Waltham
(first wife)
3 July 1361 1361 Third cousins Henry III of England
John IV, Duke of Brittany Joan Holland, Duchess of Brittany
(second wife)
May 1366 1366 Third cousins Henry III of England
John IV, Duke of Brittany Joan of Navarre, Queen of England
(third wife)
2 October 1386 1386 Fourth cousins once removed Theobald I of Navarre
John V Palaiologos, Byzantine Emperor Helena Kantakouzene Constantinople, 28 May 1347 1347 Second cousins Michael VIII Palaiologos, Byzantine Emperor
John V of Portugal Maria Anna of Austria 27 October 1708 1708 First cousins Philip William, Elector Palatine
John VI of Portugal Carlota of Spain 8 May 1785 1785 Second cousins Philip V of Spain
John V, Count of Armagnac Isabelle d'Armagnac, dame des Quatre-Vallées c. 1450. Papal dispensation declared forged 1457[71] 1450 Full siblings[72][73] John IV, Count of Armagnac
John of Gaunt, 1st Duke of Lancaster Blanche of Lancaster
(first wife)
Reading Abbey, Reading, Berkshire, 19 May 1359 1359 Third cousins Henry III of England
John of Gaunt, 1st Duke of Lancaster Infanta Constance of Castile
(second wife)
Roquefort, 21 September 1371 1371 Third cousins twice removed Ferdinand III of Castile
John of Lancaster, 1st Duke of Bedford Anne of Burgundy 13 May 1423 1423 Fifth cousins Philip III of France
John, Duke of Östergötland Princess Maria Elizabeth of Sweden 29 November 1612 1612 First cousins Gustav I of Sweden
John, Prince of Asturias Margaret of Austria, Duchess of Savoy 20 January 1495 1495 Third cousins John I of Portugal
John Adolf, Duke of Holstein-Gottorp Augusta of Denmark 30 August 1596 1596 First cousins once removed Frederick I of Denmark
Duke John Albert of Mecklenburg Princess Elisabeth Sybille of Saxe-Weimar-Eisenach 6 November 1886 1886 Second cousins once removed Paul I of Russia
John Casimir, Count Palatine of Kleeburg Catherine of Sweden, Countess Palatine of Kleeburg 11 June 1615 1615 Second cousins Philip I, Landgrave of Hesse
John Christian, Count Palatine of Sulzbach Maria Henriette de La Tour d'Auvergne
(first wife)
15 February 1722 1722 Fifth cousin once removed William I, Count of Nassau-Dillenburg
John Christian, Count Palatine of Sulzbach Landgravine Eleonore of Hesse-Rotenburg
(second wife)
21 January 1731 1731 Third cousins Maurice, Landgrave of Hesse-Kassel
John Frederick, Duke of Württemberg Barbara Sophie of Brandenburg 5 November 1609 1609 Third cousins Joachim I Nestor, Elector of Brandenburg
John Frederick II, Duke of Saxony Agnes of Hesse 26 May 1555 1555 Third cousins Frederick II, Elector of Saxony
John George I, Elector of Saxony Duchess Magdalene Sibylle of Prussia 19 July 1607 1607 Third cousins Joachim I Nestor, Elector of Brandenburg
John George II, Elector of Saxony Margravine Magdalene Sibylle of Brandenburg-Bayreuth 13 November 1638 1638 Second cousins once removed Joachim II Hector, Elector of Brandenburg
John George III, Elector of Saxony Princess Anna Sophie of Denmark 9 October 1666 1666 Second cousins once removed John George, Elector of Brandenburg
John Manuel, Prince of Portugal Archduchess Joan of Austria Lisbon, 20 January 1554 1554 Double first cousins Philip I of Castile and Joanna of Castile; Manuel I of Portugal and Maria of Aragon
José, Prince of Brazil Infanta Benedita of Portugal 21 February 1777 1777 First cousins[74] John V of Portugal
Joseph I of Portugal Mariana Victoria of Spain 19 January 1729 1729 Second cousins; third cousins once removed Philip William, Elector Palatine; Philip III of Spain
Joseph I, Holy Roman Emperor Wilhelmine Amalia of Brunswick-Lüneburg 24 February 1699 1699 Fifth cousins twice removed Christian I of Denmark
Joseph II, Holy Roman Emperor Princess Isabella of Parma
(first wife)
6 October 1760 1760 Third cousins once removed Louis XIII of France
Joseph II, Holy Roman Emperor Maria Josepha of Bavaria
(second wife)
13 January 1765 1765 Second cousins Leopold I, Holy Roman Emperor
Archduke Joseph August of Austria Princess Auguste of Bavaria 15 November 1893 1893 Second cousins twice removed Leopold II, Holy Roman Emperor
Archduke Joseph Francis of Austria Princess Anna of Saxony 4 October 1926 1926 Half-second cousins once removed Leopold II, Grand Duke of Tuscany
Joseph Johann Adam, Prince of Liechtenstein Princess Maria Gabriele of Liechtenstein 1 December 1712 1712 Second cousins once removed Prince Hartmann II of Liechtenstein
Archduke Joseph Karl of Austria Princess Clotilde of Saxe-Coburg and Gotha 12 May 1864 1864 Second cousins once removed Charles III of Spain
Joseph Wenzel I, Prince of Liechtenstein Anna Maria of Liechtenstein 1718 1718 First cousins Prince Hartmann III of Liechtenstein (son of Gundakar, Prince of Liechtenstein)
Josias, Hereditary Prince of Waldeck and Pyrmont Duchess Altburg of Oldenburg 25 August 1922 1922 Third cousins Victor II, Prince of Anhalt-Bernburg-Schaumburg-Hoym
Infante Juan, Count of Barcelona Princess María de las Mercedes of Bourbon-Two Sicilies 12 October 1935 1935 Third cousins Ferdinand VII of Spain
Juan, Count of Montizón Archduchess Maria Beatrix of Austria-Este 6 February 1847 1847 Third cousins Philip V of Spain
Juan Carlos I of Spain Princess Sophia of Greece and Denmark Church of Saint Dennis, Athens, 14 May 1962 1962 Third cousins, Third cousins once removed Queen Victoria
Julia Nero Caesar
(first husband)
AD 20 0020 First cousins Nero Claudius Drusus
Julia the Elder Marcus Claudius Marcellus Rome, 25 BC -25 First cousins Gaius Octavius and Atia Balba Caesonia
Julia the Younger Lucius Aemilius Paullus BC 5 BC 5 Half first cousins Scribonia
Julia Drusilla Marcus Aemilius Lepidus November 37 37 First cousins Marcus Vipsanius Agrippa and Julia the Elder
Karl, Duke of Schleswig-Holstein-Sonderburg-Glücksburg Princess Vilhelmine Marie of Denmark 19 May 1838 1838 First cousins Prince Charles of Hesse-Kassel
Karl, Prince of Leiningen Grand Duchess Maria Kirillovna of Russia 25 November 1925 1925 Half-third cousins Princess Victoria of Saxe-Coburg-Saalfeld
Prince Karl of Leiningen Princess Marie Louise of Bulgaria 14 February 1957 1957 Fourth cousins once removed Francis, Duke of Saxe-Coburg-Saalfeld
Prince Karl Alfred of Liechtenstein Archduchess Agnes Christina of Austria 17 February 1949 1949 Second cousins once removed Archduke Franz Karl of Austria
Prince Karl Anton of Hohenzollern Princess Joséphine Caroline of Belgium 28 May 1894 1894 First cousins Karl Anton, Prince of Hohenzollern
Karl Anton August, Prince of Schleswig-Holstein-Sonderburg-Beck Countess Charlotte of Dohna-Schlodien Königsberg, 30 May 1754 1754 First cousins Frederick Louis, Duke of Schleswig-Holstein-Sonderburg-Beck
Karl August, Grand Duke of Saxe-Weimar-Eisenach Landgravine Louise of Hesse-Darmstadt 3 October 1775 1775 Fifth cousins once removed Johann II, Duke of Saxe-Weimar
Karl August, Prince of Waldeck and Pyrmont Christiane Henriette, Countess Palatine of Zweibrücken 19 August 1741 1741 First cousins Christian II, Count Palatine of Zweibrücken-Birkenfeld
Karl August, 10th Prince of Thurn and Taxis Princess Maria Anna of Braganza 18 August 1921 1921 Fourth cousins Charles III of Spain
Karl Georg August, Hereditary Prince of Brunswick-Wolfenbüttel Princess Louise of Orange-Nassau 14 October 1790 1790 Double second cousins George II of Great Britain; Frederick William I of Prussia
Archduke Karl Ludwig of Austria Princess Margaretha of Saxony
(first wife)
4 November 1856 1856 First cousins Maximilian I Joseph of Bavaria
Archduke Karl Ludwig of Austria Princess Maria Annunciata of Bourbon-Two Sicilies
(second wife)
21 October 1862 1862 Second cousins Leopold II, Holy Roman Emperor
Archduke Karl Ludwig of Austria Infanta Maria Theresa of Portugal
(third wife)
23 July 1873 1873 Third cousins Charles III of Spain
Archduke Karl Salvator of Austria Princess Maria Immaculata of Bourbon-Two Sicilies 19 September 1861 1861 First cousins Francis I of the Two Sicilies
Karl Theodor, Duke in Bavaria Princess Sophie of Saxony 11 February 1865 1865 First cousins Maximilian I Joseph of Bavaria
Khalil of Bithynia Irene Palaiologina
(daughter of John V Palaiologos)
28 May 1347 1347 First cousins John VI Kantakouzenos, Byzantine Emperor
Knud, Hereditary Prince of Denmark Princess Caroline-Mathilde of Denmark 8 September 1933 1933 First cousins Frederick VIII of Denmark
Prince Konrad of Bavaria Princess Maria Bona of Savoy-Genoa 8 January 1921 1921 Second cousins Ludwig I of Bavaria
Prince Konstantin of Bavaria Princess Maria Adelgunde of Hohenzollern-Sigmaringen 26 August 1942 1942 Double fourth cousins Maximilian I Joseph of Bavaria; Francis I of the Two Sicilies
Grand Duke Konstantin Konstantinovich of Russia Princess Elisabeth of Saxe-Altenburg 27 April 1884 1884 Second cousins; second cousins once removed Frederick, Duke of Saxe-Altenburg; Paul I of Russia
Grand Duke Konstantin Nikolayevich of Russia Princess Alexandra of Saxe-Altenburg 11 September 1848 1848 Second cousins Charles II, Grand Duke of Mecklenburg-Strelitz
Prince Leopold, Duke of Albany Princess Helena of Waldeck and Pyrmont St. George's Chapel, Windsor Castle, 27 April 1882 1882 Third cousins twice removed Duke Charles Louis Frederick of Mecklenburg
Leopold I, Prince of Lippe Princess Pauline of Anhalt-Bernburg 2 January 1796 1796 Second cousins once removed Karl Frederick, Prince of Anhalt-Bernburg
Leopold I of Belgium Princess Charlotte of Wales
(first wife)
2 May 1816 1816 Fourth cousins Frederick I, Duke of Saxe-Gotha-Altenburg
Leopold I of Belgium Louise of Orléans
(second wife)
9 August 1832 1832 Third cousins once removed Louis Rudolph, Duke of Brunswick-Lüneburg
Leopold I, Holy Roman Emperor Margarita Teresa of Spain
(first wife)
Vienna, 12 December 1666 1666 First cousins[70] Philip III of Spain
Leopold I, Holy Roman Emperor Claudia Felicitas of Austria
(second wife)
15 October 1673 1673 Second cousins Charles II, Archduke of Austria
Leopold I, Holy Roman Emperor Eleonor Magdalene of Neuburg
(third wife)
14 December 1676 1676 Second cousins William V, Duke of Bavaria
Leopold II, Holy Roman Emperor Maria Luisa of Spain 16 February 1764 1764 Second cousins once removed Leopold I, Holy Roman Emperor
Leopold II, Grand Duke of Tuscany Princess Maria Anna of Saxony
(first wife)
16 November 1817 1817 Second cousins Francis I, Holy Roman Emperor and Maria Theresa
Leopold II, Grand Duke of Tuscany Princess Maria Antonia of the Two Sicilies
(second wife)
Naples, 7 June 1833 1833 First cousins Ferdinand I of the Two Sicilies
Leopold II of Belgium Marie Henriette of Austria 22 August 1853 1853 Second cousins once removed Charles III of Spain
Leopold III of Belgium Astrid of Sweden 4 November 1926 1926 Half-third cousins once removed Maximilian I Joseph of Bavaria
Leopold IV, Duke of Anhalt Princess Frederica Wilhelmina of Prussia 18 April 1818 1818 Second cousins Louis IX, Landgrave of Hesse-Darmstadt
Leopold V, Archduke of Austria Claudia de' Medici 19 April 1626 1626 Second cousins twice removed Philip I of Castile and Joanna of Castile
Leopold, Hereditary Prince of Anhalt Princess Elisabeth of Hesse-Kassel 26 May 1884 1884 Third cousins Frederick William II of Prussia
Leopold, Duke of Lorraine Élisabeth Charlotte d'Orléans 13 October 1698 1698 Third cousins Charles II, Archduke of Austria
Leopold, Prince of Salerno Archduchess Clementina of Austria 28 July 1816 1816 First cousins once removed[70] Francis I, Holy Roman Emperor and Maria Theresa
Prince Leopold of Bavaria Archduchess Gisela of Austria 20 April 1873 1873 Half-second cousins Maximilian I Joseph of Bavaria
Archduke Leopold Salvator of Austria Infanta Blanca of Spain 24 October 1889 1889 Half-second cousins once removed Francis I of the Two Sicilies
Lionel of Antwerp, 1st Duke of Clarence Elizabeth de Burgh, 4th Countess of Ulster
(first wife)
Tower of London, 15 August 1352 1352 Third cousins once removed Edward I of England
Prince Lorenz of Belgium, Archduke of Austria-Este Princess Astrid of Belgium, Archduchess of Austria-Este 22 September 1984 1984 Third cousins once removed Miguel I of Portugal
Louis I of Etruria Maria Luisa, Duchess of Lucca 5 August 1795 1795 First cousins Philip, Duke of Parma
Louis I of Spain Louise Élisabeth d'Orléans 20 January 1722 1722 Half-first cousins once removed Louis XIV of France
Louis I, Grand Duke of Hesse Princess Louise of Hesse-Darmstadt 19 February 1777 1777 First cousins Louis VIII, Landgrave of Hesse-Darmstadt
Louis II, Grand Duke of Hesse Princess Wilhelmine of Baden 19 June 1804 1804 First cousins Louis IX, Landgrave of Hesse-Darmstadt
Louis II of Hungary Mary of Austria 22 July 1515 1515 Half-second cousins once removed John II of Aragon and Navarre
Louis III of Naples Margaret of Savoy, Duchess of Anjou 31 Mar 1431 1431 Second cousins once removed John II of France
Louis III, Grand Duke of Hesse Princess Mathilde Caroline of Bavaria 26 December 1833 1833 Second cousins Prince George William of Hesse-Darmstadt
Louis IV, Grand Duke of Hesse Princess Alice of the United Kingdom Osborne House, 1 July 1862 1862 Fourth cousins Ferdinand Albert II, Duke of Brunswick-Wolfenbüttel
Louis VII of France Eleanor of Aquitaine
(first wife)
25 July 1137 1137 Third cousins once removed Robert II of France
Louis VII of France Constance of Castile
(second wife)
1154 1154 Third cousins once removed Robert II of France
Louis VII of France Adela of Champagne
(third wife)
18 October 1160 1160 Third cousins once removed Robert II of France
Louis XI of France Charlotte of Savoy 14 February 1451 1451 Third cousins John II of France
Louis XII of France Joan of France, Duchess of Berry
(first wife)
8 September 1476 1476 Second cousins once removed Charles V of France
Louis XII of France Anne, Duchess of Brittany
(second wife)
8 January 1499 1499 First cousins once removed Louis I, Duke of Orléans
Louis XII of France Mary Tudor, Queen of France
(third wife)
9 October 1514 1514 Second cousins twice removed Charles V of France
Louis XIII of France Anne of Austria 24 November 1615 1615 Second cousins Ferdinand I, Holy Roman Emperor
Louis XIV of France Maria Theresa of Spain Saint Jean-Baptiste Church, Saint-Jean-de-Luz, 9 June 1660 1660 Double first cousins Henry IV of France and Marie de' Medici;
Philip III of Spain and Margaret of Austria
Louis XVI of France Archduchess Maria Antonia of Austria Palace of Versailles, 16 May 1770 1770 Second cousins once removed Leopold I, Holy Roman Emperor
Louis XVIII of France Princess Marie Joséphine of Savoy Palace of Versailles, 14 May 1771 1771 Double second cousins once removed Louis, Dauphin of France and Duchess Maria Anna Victoria of Bavaria; Victor Amadeus II of Sardinia and Anne Marie d'Orléans
Prince Louis, Count of Aquila Princess Januária of Brazil 28 April 1844 1844 First cousins once removed Charles IV of Spain
Louis, Grand Dauphin Duchess Maria Anna Victoria of Bavaria 28 January 1680 1680 Second cousins Henry IV of France
Louis, Dauphin of France Infanta Maria Teresa Rafaela of Spain
(first wife)
18 December 1744 1744 First cousins once removed Louis, Grand Dauphin
Louis, Dauphin of France Maria Josepha of Saxony, Dauphine of France
(second wife)
9 February 1747 1747 Fourth cousins once removed Philip III of Spain
Louis of Cyprus Charlotte, Queen of Cyprus 7 October 1459 1459 First cousins Janus of Cyprus
Louis, Duke of Burgundy Marie Adélaïde of Savoy 6 December 1697 1697 Double second cousins Louis XIII of France; Victor Amadeus I, Duke of Savoy
Louis, Duke of Joyeuse Marie Anne de Bourbon 1719 1719 Half-third cousins Henry IV of France
Prince Louis, Duke of Nemours Princess Victoria of Saxe-Coburg and Gotha 27 April 1840 1840 Fourth cousins Louis Rudolph, Duke of Brunswick-Lüneburg
Louis d'Orléans, Duke of Orléans Margravine Auguste of Baden-Baden 13 July 1724 1724 Half-fourth cousins Philip II of Spain
Louis, Duke of Savoy Anne of Cyprus 12 February 1434 1434 Third cousins once removed Louis I, Duke of Bourbon
Louis, Duke of Württemberg Princess Henriette of Nassau-Weilburg 28 January 1797 1797 Third cousins George I of Great Britain
Louis, Prince of Condé Louise Françoise de Bourbon, Duchess of Bourbon 25 May 1685 1685 Fourth cousins once removed Charles, Duke of Vendôme
Louis Armand I, Prince of Conti Marie Anne de Bourbon 16 January 1680 1680 Fourth cousins Charles, Duke of Vendôme
Louis Armand II, Prince of Conti Louise Élisabeth de Bourbon 9 July 1713 1713 First cousins Henri Jules, Prince of Condé
Louis Auguste, Duke of Maine Louise Bénédicte de Bourbon 19 May 1692 1692 Fourth cousins once removed Charles, Duke of Vendôme
Prince Louis Charles of Prussia Frederica of Mecklenburg-Strelitz 26 December 1793 1793 Second cousins Louis VIII, Landgrave of Hesse-Darmstadt
Louis Ferdinand, Prince of Prussia Grand Duchess Kira Kirillovna of Russia 21 October 1938 1938 Second cousins once removed Queen Victoria
Louis François, Prince of Conti Louise Diane d'Orléans 21 January 1732 1732 First cousins once removed Louis XIV of France
Louis François Joseph, Prince of Conti Maria Fortunata d'Este 7 February 1759 1759 Second cousins Louis XIV of France
Louis George, Margrave of Baden-Baden Duchess Maria Anna Josepha of Bavaria 20 July 1755 1755 Third cousins once removed Charles Emmanuel I, Duke of Savoy
Louis Henri, Prince of Condé Bathilde d'Orléans 20 April 1770 1770 Second cousins Louis, Prince of Condé
Louis Henri, Duke of Bourbon Marie Anne de Bourbon 9 August 1713 1713 First cousins Henri Jules, Prince of Condé
Louis Jean Marie de Bourbon, Duke of Penthièvre Maria Teresa Felicitas d'Este 1744 1744 First cousins once removed Louis XIV of France
Louis Joseph, Duke of Guise Élisabeth Marguerite d'Orléans 15 May 1667 1667 Fifth cousins René II, Duke of Lorraine
Louis Joseph, Duke of Vendôme Marie Anne de Bourbon, Duchess of Vendôme 21 May 1710 1710 Fourth cousins once removed Charles, Duke of Vendôme
Louis Philippe I Maria Amalia of Naples and Sicily 25 November 1809 1809 Double third cousins once removed Louis XIV of France; Philippe I, Duke of Orléans
Louis Philippe I, Duke of Orléans Louise Henriette de Bourbon 17 December 1743 1743 Second cousins Louis XIV of France
Louis Philippe II, Duke of Orléans Louise Marie Adélaïde de Bourbon Palace of Versailles, 5 April 1769 1769 Second cousins Philippe II, Duke of Orléans
Louise, Princess Royal Alexander Duff, 1st Duke of Fife Buckingham Palace, 27 July 1889 1889 Third cousins George III of the United Kingdom
Lucius Aelius Avidia Plautia Before 130 130 First cousins
Ludwig I of Bavaria Therese of Saxe-Hildburghausen 12 October 1810 1810 First cousins once removed Prince George William of Hesse-Darmstadt
Ludwig III of Bavaria Maria Theresa of Austria-Este February 20, 1868 1868 Second cousins once removed Leopold II, Holy Roman Emperor
Prince Ludwig of Bavaria Princess Irmingard of Bavaria July 20, 1950 1950 First cousins Ludwig III of Bavaria
Prince Ludwig August of Saxe-Coburg and Gotha Princess Leopoldina of Brazil 15 December 1864 1864 Second cousins Ferdinand I of the Two Sicilies
Prince Ludwig Gaston of Saxe-Coburg and Gotha Princess Mathilde of Bavaria 1 May 1900 1900 Second cousins twice removed Leopold II, Holy Roman Emperor
Prince Ludwig Ferdinand of Bavaria Infanta María de la Paz of Spain April 2, 1883 1883 First cousins Infante Francisco de Paula of Spain
Prince Ludwig Philipp of Thurn and Taxis Princess Elisabeth of Luxembourg 14 November 1922 1922 Fourth cousins Charles II, Grand Duke of Mecklenburg-Strelitz
Luís I of Portugal Maria Pia of Savoy 6 October 1862 1862 Second cousins once removed Leopold II, Holy Roman Emperor
Prince Luís of Orléans-Braganza Princess Maria di Grazia of Bourbon-Two Sicilies 4 November 1908 1908 Second cousins Francis I of the Two Sicilies
Count Luitpold of Castell-Castell Princess Alexandrine-Louise of Denmark 22 January 1937 1937 Fifth cousins Frederick II, Landgrave of Hesse-Kassel
Magnus III of Mecklenburg-Schwerin Elizabeth of Denmark, Duchess of Mecklenburg 26 August 1543 1543 Third cousins Frederick I, Elector of Brandenburg
Manuel I of Portugal Isabella, Princess of Asturias
(first wife)
Estremoz, 3 November 1490 1490 Second cousins Ferdinand I of Aragon; John of Gaunt, 1st Duke of Lancaster
Manuel I of Portugal Maria of Aragon
(second wife)
Alcazar de Sal, 30 October 1500 1500 Second cousins Ferdinand I of Aragon; John of Gaunt, 1st Duke of Lancaster
Manuel I of Portugal Eleanor of Austria
(third wife)
16 July 1518 1518 Second cousins once removed Ferdinand I of Aragon; John of Gaunt, 1st Duke of Lancaster
Manuel II of Portugal Princess Augusta Victoria of Hohenzollern 4 September 1913 1913 Third cousins Prince Ferdinand of Saxe-Coburg and Gotha and Princess Maria Antonia Koháry de Csábrág et Szitnya
Manuel of Castile Constance of Aragon, Lady of Villena 1260 1260 Third cousins Alfonso VII of León
Marcus Aurelius, Emperor of Rome Faustina the Younger 13 May 145 145 First cousins Marcus Annius Verus and Rupilia
Marcus Valerius Messalla Barbatus Domitia Lepida the Younger 15 15 Half first cousins Octavia the Younger
Margaret, Countess of Pembroke John Hastings, 2nd Earl of Pembroke 19 May 1359 1359 Half-fourth cousins once removed Isabella of Angoulême
Maria of Portugal, Lady of Meneses and Orduña Fernando Díaz de Haro, Lord of Orduña and Balmaseda 1315 1315 Half-first cousins once removed Alfonso X of Castile
Maria of Portugal, Marchioness of Tortosa Infante Fernando, Marquis of Tortosa 1354 1354 Second cousins Sancho IV of Castile
Maria I of Portugal Peter III of Portugal 6 June 1760 1760 Second cousins once removed[70] Philip William, Elector Palatine
Maria II of Portugal Ferdinand II of Portugal 1 January 1836 1836 Fourth cousins once removed Louis Rudolph, Duke of Brunswick-Lüneburg
Princess Maria de los Dolores of Bourbon-Two Sicilies Augustyn Józef Czartoryski 12 August 1937 1937 Third cousins Louis Philippe I
Princess Maria Cristina of Savoy-Aosta Prince Casimir of Bourbon-Two Sicilies 29 January 1967 1967 Third cousins twice removed Francis I of the Two Sicilies
Princess Maria Francesca of Savoy Prince Luigi of Bourbon-Parma 23 January 1939 1939 Fourth cousins Leopold II, Holy Roman Emperor
Maria Vladimirovna, Grand Duchess of Russia Prince Franz Wilhelm of Prussia 4 September 1976 1976 Third cousins once removed Queen Victoria
Princess Marie of Orléans Prince Gundakar of Liechtenstein 22 July 1989 1989 Fifth cousins Maximilian I Joseph of Bavaria
Marie de Bourbon, Duchesse d'Estouteville (daughter of Francis de Bourbon, Count of St. Pol) Jean, Count of Soissons and Enghien (son of Charles, Duke of Vendôme) First cousins Francis, Count of Vendôme
Princess Marie Adelheid of Lippe Prince Heinrich XXXII Reuss of Köstritz
(first husband)
19 May 1920 1920 Fourth cousins Frederick William II of Prussia
Princess Marie Adelheid of Lippe Prince Heinrich XXXV Reuss of Köstritz
(second husband)
12 April 1921 1921 Fourth cousins Frederick William II of Prussia
Princess Marie Thérèse of France Louis Antoine, Duke of Angoulême Mittau, Courland, 10 June 1799 1799 First cousins Louis, Dauphin of France
Martin of Aragon Margaret of Prades 17 September 1409 1409 Second cousins once removed James II of Aragon
Martin I of Sicily Maria, Queen of Sicily February, 1392 1392 First cousins Peter IV of Aragon
Mary, Queen of Scots Francis II of France
(first husband)
24 April 1558 1558 Second cousins Jean VIII, Count of Vendôme
Mary, Queen of Scots Henry Stuart, Lord Darnley
(second husband)
Chapel-Royal, Palace of Holyroodhouse, Edinburgh, 9 July 1565 1565 Half-first cousins Margaret Tudor
Mary, Queen of Scots James Hepburn, 4th Earl of Bothwell
(third husband)
Great Hall, Holyrood Palace, Edinburgh, 15 May 1567 1567 Half-third cousins once removed Lady Joan Beaufort
Empress Matilda Henry V, Holy Roman Emperor
(first husband)
January 1114 1114 Second cousins twice removed Gisela of Swabia
Empress Matilda Geoffrey Plantagenet, Count of Anjou
(second husband)
1128 1128 Fourth cousins once removed Richard I of Normandy
Matthew, Count of Boulogne Marie I, Countess of Boulogne 1160 1160 Third cousins Baldwin V, Count of Flanders
Matthew, Count of Foix Joanna of Aragon, Countess of Foix 4 June 1392 1392 Half-fourth cousins Peter III of Aragon
Matthias, Holy Roman Emperor Anna of Tyrol 4 December 1611 1611 First cousins Ferdinand I, Holy Roman Emperor
Maurice, Elector of Saxony Agnes of Hesse 9 January 1541 1541 First cousins once removed Albert III, Duke of Saxony
Prince Maurice of Savoy Princess Luisa Cristina of Savoy 8 August 1642 1642 Third cousins once removed[70] Philip I of Castile and Joanna of Castile
Maximilian I, Holy Roman Emperor Mary, Duchess of Burgundy
(first wife)
Ghent, 18 August 1477 1477 Second cousins John I of Portugal
Maximilian I, Holy Roman Emperor Anne of Brittany
(second wife)
19 December 1490 1490 Second cousins once removed Ferdinand I of Aragon
Maximilian I of Mexico Princess Charlotte of Belgium Brussels, 27 July 1857 1857 Second cousins Ferdinand I of the Two Sicilies
Maximilian I, Elector of Bavaria Elisabeth of Lorraine
(first wife)
9 February 1595 1595 First cousins Francis I, Duke of Lorraine
Maximilian I, Elector of Bavaria Archduchess Maria Anna of Austria
(second wife)
15 July 1635 1635 Second cousins[70] Ferdinand I, Holy Roman Emperor
Maximilian I Joseph of Bavaria Princess Augusta Wilhelmine of Hesse-Darmstadt
(first wife)
30 September 1785 1785 Fourth cousins George II, Landgrave of Hesse-Darmstadt
Maximilian I Joseph of Bavaria Caroline of Baden
(second wife)
9 March 1797 1797 Fourth cousins once removed George II, Landgrave of Hesse-Darmstadt
Maximilian II, Holy Roman Emperor Maria of Spain 13 September 1548 1548 First cousins Philip I of Castile and Joanna of Castile
Maximilian II Emanuel, Elector of Bavaria Maria Antonia of Austria 15 July 1685 1685 Second cousins Ferdinand II, Holy Roman Emperor
Maximilian II of Bavaria Marie of Prussia 12 October 1842 1842 Third cousins Louis VIII, Landgrave of Hesse-Darmstadt
Maximilian III Joseph, Elector of Bavaria Maria Anna Sophia of Saxony 9 July 1747 1747 First cousins Joseph I, Holy Roman Emperor
Prince Maximilian of Baden Princess Marie Louise of Hanover 10 July 1900 1900 Fourth cousins Frederick V of Denmark
Maximilian, Hereditary Prince of Saxony Princess Carolina of Parma
(first wife)
22 April 1792 1792 Third cousins once removed Leopold I, Holy Roman Emperor
Maximilian, Hereditary Prince of Saxony Princess Maria Luisa Carlota of Parma
(second wife)
15 October 1825 1825 Third cousins once removed Leopold I, Holy Roman Emperor
Maximilian de Beauharnais, 3rd Duke of Leuchtenberg Grand Duchess Maria Nikolaevna of Russia 2 July 1839 1839 Second cousins once removed Prince George William of Hesse-Darmstadt
Maximilian Anton, Hereditary Prince of Thurn and Taxis Duchess Helene in Bavaria 24 August 1858 1858 Fourth cousins Louis VIII, Landgrave of Hesse-Darmstadt
Duke Maximilian Joseph in Bavaria Princess Ludovika of Bavaria September 9, 1828 1828 First cousins once removed Frederick Michael, Count Palatine of Zweibrücken
Michael of Romania Princess Anne of Bourbon-Parma Athens, 10 June 1948 1948 Second cousins once removed Christian IX of Denmark
Grand Duke Michael Mikhailovich of Russia Sophie of Merenberg 10 March 1891 1891 Third cousins once removed Charles II, Grand Duke of Mecklenburg-Strelitz
Grand Duke Michael Nikolaevich of Russia Olga Feodorovna of Baden 28 August 1857 1857 Third cousins Louis IX, Landgrave of Hesse-Darmstadt
Grand Duke Michael Pavlovich of Russia Princess Charlotte of Württemberg 19 February 1824 1824 First cousins once removed Frederick II Eugene, Duke of Württemberg
Archduchess Michaela of Austria Count Hubertus von Kageneck 22 October 1994 1994 Fourth cousins once removed Charles IV of Spain
Prince Michel of Bourbon-Parma Princess Maria Pia of Savoy 2003 2003 Second cousins once removed Miguel I of Portugal
Michel, 14th Prince of Ligne Princess Eleonora of Orléans-Braganza 10 March 1981 1981 Fourth cousins once removed John VI of Portugal
Miguel, Duke of Braganza Princess Maria Theresa of Löwenstein-Wertheim-Rosenberg Kleinheubach, 8 November 1893 1893 First cousins Constantine, Hereditary Prince of Löwenstein-Wertheim-Rosenberg
Prince Moritz of Saxe-Altenburg Princess Augusta of Saxe-Meiningen 15 October 1862 1862 Fourth cousins Louis VIII, Landgrave of Hesse-Darmstadt
Princess Nadezhda of Bulgaria Duke Albrecht Eugen of Württemberg 24 January 1924 1924 Second cousins Ferdinand II of the Two Sicilies
Napoleon Louis Bonaparte Charlotte Napoléone Bonaparte 1823? 1823 First cousins Carlo Buonaparte
Nero, Emperor of Rome Claudia Octavia Rome, 9 June AD 53 0053 Double first cousins once removed Lucius Domitius Ahenobarbus and Antonia Major; Nero Claudius Drusus and Antonia Minor
Nicholas I of Russia Princess Charlotte of Prussia Chapel of the Winter Palace, 13 July 1817 1817 Third cousins Frederick William I of Prussia
Nicholas II of Russia Princess Alix of Hesse and by Rhine Grand Church of the Winter Palace, Winter Palace, Saint Petersburg, 26 November 1894 1894 Second cousins Louis II, Grand Duke of Hesse and by Rhine
Grand Duke Nicholas Nikolaevich of Russia Duchess Alexandra Petrovna of Oldenburg 6 February 1856 1856 First cousins once removed Paul I of Russia
Prince Nicholas of Greece and Denmark Grand Duchess Elena Vladimirovna of Russia 29 August 1902 1902 Second cousins Nicholas I of Russia
Nicholas Francis, Duke of Lorraine Claude Françoise de Lorraine 18 February 1634 1634 First cousins Charles III, Duke of Lorraine
Prince Nikolaus of Liechtenstein Princess Margaretha of Luxembourg 20 March 1982 1982 Third cousins Miguel I of Portugal
Nikolaus, Hereditary Grand Duke of Oldenburg Princess Helena of Waldeck and Pyrmont 26 October 1921 1921 Third cousins Victor II, Prince of Anhalt-Bernburg-Schaumburg-Hoym
Odo III, Duke of Burgundy Theresa of Portugal, Countess of Flanders 1193 1193 Second cousins twice removed Henry, son of Robert I of Burgundy
Odoardo Farnese, Duke of Parma Margherita de' Medici 1628 1628 Third cousins once removed Philip I of Castile and Joanna of Castile
Olav V of Norway Princess Märtha of Sweden Oslo Cathedral, 21 March 1929 1929 First cousins Frederick VIII of Denmark
Duchess Olga of Württemberg Prince Maximilian of Schaumburg-Lippe 3 November 1898 1898 First cousins once removed George William, Prince of Schaumburg-Lippe
Oscar II of Sweden Sophia of Nassau 6 June 1857 1857 Third cousins once removed Prince George William of Hesse-Darmstadt
Archduke Otto of Austria Princess Maria Josepha of Saxony 2 October 1886 1886 Second cousins; second cousins once removed Maximilian I Joseph of Bavaria; Francis II, Holy Roman Emperor
Archduke Otto of Austria Princess Regina of Saxe-Meiningen 10 May 1951 1951 Fourth cousins Karl Ludwig, Prince of Hohenlohe-Langenburg
Paul of Greece Princess Frederica of Hanover Athens, 9 January 1938 1938 First cousins once removed (through Frederick III, German Emperor and Victoria, Princess Royal);
Second cousins (through Christian IX of Denmark)
Frederick III, German Emperor and Victoria, Princess Royal; Christian IX of Denmark
Prince Paul of Württemberg Princess Charlotte of Saxe-Hildburghausen 28 September 1805 1805 Fifth cousins Ernest I, Duke of Saxe-Gotha
Grand Duke Paul Alexandrovich of Russia Grand Duchess Alexandra Georgievna of Russia 17 June 1889 1889 First cousins once removed Nicholas I of Russia
Paul Frederick, Grand Duke of Mecklenburg-Schwerin Princess Alexandrine of Prussia 25 May 1822 1822 Fourth cousins once removed Adolf Frederick I, Duke of Mecklenburg
Duke Paul Frederick of Mecklenburg Princess Marie of Windisch-Graetz 5 May 1881 1881 First cousins Paul Frederick, Grand Duke of Mecklenburg-Schwerin
Duke Paul Wilhelm of Württemberg Princess Maria Sophia of Thurn and Taxis 17 April 1827 1827 Third cousins Anselm Franz, 2nd Prince of Thurn and Taxis
Pedro I of Brazil Archduchess Maria Leopoldina of Austria
(first wife)
1817 1817 Second cousins Charles III of Spain
Pedro II of Brazil Teresa Cristina of the Two Sicilies 30 May 1843 1843 Double first cousins once removed Ferdinand I of the Two Sicilies; Charles IV of Spain
Infante Pedro Carlos of Spain and Portugal Maria Teresa, Princess of Beira 13 May 1810 1810 First cousins (through Maria I of Portugal and Peter III of Portugal); first cousins once removed (through Charles III of Spain) Maria I of Portugal and Peter III of Portugal; Charles III of Spain
Prince Pedro Gastão of Orléans-Braganza Princess Maria de la Esperanza of Bourbon-Two Sicilies 18 December 1944 1944 Double third cousins Francis I of the Two Sicilies; Louis Philippe I
Prince Pedro Henrique of Orléans-Braganza Princess Maria Elisabeth of Bavaria 19 August 1937 1937 Third cousins Leopold II, Grand Duke of Tuscany
Peter I of Portugal Constanza Manuel
(first wife)
24 August 1339 1339 Second cousins once removed Ferdinand III of Castile
Peter I of Portugal Inês de Castro
(second wife)
1346 1346 Half-first cousins once removed Sancho IV of Castile
Peter I, Grand Duke of Oldenburg Duchess Frederica of Württemberg 6 June 1781 1781 Fourth cousins once removed; fifth cousins twice removed George, Duke of Brunswick-Lüneburg; Frederick II of Denmark
Peter II of Yugoslavia Alexandra of Yugoslavia 20 March 1944 1944 Third cousins Queen Victoria
Peter II, Grand Duke of Oldenburg Princess Elisabeth of Saxe-Altenburg 10 February 1852 1852 Double second cousins Frederick II Eugene, Duke of Württemberg; Charles Christian, Prince of Nassau-Weilburg
Peter II of Aragon Maria of Montpellier June 15, 1204 1204 Fourth cousins once removed Robert I, Duke of Burgundy
Peter IV of Aragon Maria of Navarre
(first wife)
23 July 1338 1338 Fourth cousins Louis VIII of France
Peter IV of Aragon Eleanor of Portugal, Queen of Aragon
(second wife)
15 November 1347 1347 Second cousins Peter III of Aragon
Peter IV of Aragon Eleanor of Sicily
(third wife)
27 August 1349 1349 Double second cousins Peter III of Aragon; Charles II of Naples
Peter, Duke of Coimbra Isabella of Urgell, Duchess of Coimbra 13 September 1428 1428 Fourth cousins Peter III of Aragon
Peter, Duke of Schleswig-Holstein Princess Marie Alix of Schaumburg-Lippe 9 October 1947 1947 Third cousins George William, Prince of Schaumburg-Lippe
Duke Peter Alexandrovich of Oldenburg Grand Duchess Olga Alexandrovna of Russia 9 August 1901 1901 Second cousins Nicholas I of Russia
Duke Peter Georgievich of Oldenburg Princess Therese of Nassau-Weilburg 23 April 1837 1837 Fifth cousins George I of Great Britain
Archduke Peter Ferdinand of Austria Princess Maria Cristina of Bourbon-Two Sicilies 8 November 1900 1900 First cousins once removed (through Leopold II, Grand Duke of Tuscany); second cousins (through Francis I of the Two Sicilies) Leopold II, Grand Duke of Tuscany; Francis I of the Two Sicilies
Philibert, Margrave of Baden-Baden Mechthild of Bavaria 17 January 1557 1557 Third cousins Ernest, Duke of Austria
Philibert I, Duke of Savoy Bianca Maria Sforza 6 January 1474 1471 First cousins Louis, Duke of Savoy
Philibert II, Duke of Savoy Yolande Louise of Savoy
(first wife)
1496 1496 First cousins once removed Louis, Duke of Savoy
Philibert II, Duke of Savoy Margaret of Austria, Duchess of Savoy
(second wife)
1501 1501 Second cousins once removed John the Fearless
Philippa, 5th Countess of Ulster Edmund Mortimer, 3rd Earl of March Reading Abbey, 1368 1368 Third cousins once removed Richard de Clare, 6th Earl of Gloucester
Philip the Good, Duke of Burgundy Michelle of Valois
(first wife)
June 1409 1409 Second cousins John II of France
Philip the Good, Duke of Burgundy Bonne of Artois
(second wife)
20 June 1413 1413 Second cousins John II of France
Philip the Good, Duke of Burgundy Isabella of Portugal
(third wife)
Bruges, 7 January 1430 1430 Third cousins William I, Count of Hainaut
Philip, Duke of Parma Louise Élisabeth of France 26 August 1739 1739 First cousins once removed Louis, Grand Dauphin
Philip I, Count of Boulogne Matilda II, Countess of Boulogne 1223 1223 Third cousins Stephen, Count of Blois
Philip I, Landgrave of Hesse Christine of Saxony 11 December 1523 1523 Third cousins Frederick I, Elector of Saxony
Philip I of Castile Joanna of Castile 20 October 1496 1496 Third cousins John I of Portugal
Philip II of Spain Maria Manuela, Princess of Portugal
(first wife)
15 November 1543 1543 Double first cousins Philip I of Castile and Joanna of Castile; Manuel I of Portugal and Maria of Aragon
Philip II of Spain Mary I of England
(second wife)
Winchester Cathedral, 25 July 1554 1554 First Cousins once removed Ferdinand II of Aragon and Isabella I of Castile
Philip II of Spain Elisabeth of Valois
(third wife)
22 June 1559 1559 Fourth cousins Charles I, Duke of Bourbon
Philip II of Spain Anna of Austria, Queen of Spain
(fourth wife)
4 May 1570 1570 First cousins once removed[70] Philip I of Castile and Joanna of Castile
Philip II, Duke of Savoy Margaret of Bourbon 6 April 1472 1472 Second cousins Philip the Bold
Philip III of France Isabella of Aragon, Queen of France 28 May 1262 1262 Second cousins once removed Alfonso II of Aragon
Philip III of Spain Margaret of Austria, Queen of Spain 18 April 1599 1599 First cousins once removed Ferdinand I, Holy Roman Emperor
Philip IV of Spain Elisabeth of France
(first wife)
25 November 1615 1615 Second cousins Ferdinand I, Holy Roman Emperor
Philip IV of Spain Mariana of Austria
(second wife)
7 October 1649 1649 First cousins once removed[70] Charles II, Archduke of Austria
Philip V of Spain Princess Maria Luisa of Savoy
(first wife)
Barcelona, 2 November 1701 1701 Double second cousins Victor Amadeus I, Duke of Savoy; Louis XIII of France
Philip V of Spain Elisabeth Farnese
(second wife)
Parma, 24 December 1714 1714 Third cousins William V, Duke of Bavaria
Prince Philip of Bourbon-Two Sicilies Princess Marie Louise of Orléans 12 January 1916 1916 Third cousins once removed Ferdinand I of the Two Sicilies
Philip William, Elector Palatine Anna Catherine Constance Vasa
(first wife)
8 June 1642 1642 Second cousins Albert V, Duke of Bavaria
Philip William, Elector Palatine Landgravine Elisabeth Amalie of Hesse-Darmstadt
(second wife)
3 September 1653 1653 Third cousins Philip I, Landgrave of Hesse
Prince Philipp of Saxe-Coburg and Gotha Princess Louise of Belgium Brussels, 4 February 1875
(divorced Gotha, 15 January 1906)
1875 First cousins once removed (through Louis Philippe I of France);
Second cousins (through Francis, Duke of Saxe-Coburg-Saalfeld)
Louis Philippe I of France; Francis, Duke of Saxe-Coburg-Saalfeld
Duke Philipp of Württemberg Archduchess Maria Theresa of Austria 18 January 1865 1865 Third cousins Francis I, Holy Roman Emperor and Maria Theresa of Austria
Duke Philipp of Württemberg (son of Carl, Duke of Württemberg) Duchess Marie-Caroline in Bavaria (daughter of Prince Max, Duke in Bavaria) 27 July 1991 1991 Fifth cousins Maximilian I Joseph of Bavaria
Philipp Albrecht, Duke of Württemberg Archduchess Helena of Austria
(first wife)
24 October 1923 1923 Second cousins Ferdinand II of the Two Sicilies
Philipp Albrecht, Duke of Württemberg Archduchess Rosa of Austria
(second wife)
1 August 1928 1928 Second cousins Ferdinand II of the Two Sicilies
Philipp Reinhard, Count of Hanau-Münzenberg Countess Palatine Magdalena Claudia of Zweibrücken-Birkenfeld-Bischweiler 27 February 1689 1689 First cousins Christian I, Count Palatine of Birkenfeld-Bischweiler
Philippe II, Duke of Orléans Françoise Marie de Bourbon 18 February 1692 1692 First cousins Louis XIII of France
Prince Philippe, Count of Paris Princess Marie Isabelle of Orléans 30 May 1864 1864 First cousins Louis Philippe I of France
Prince Philippe, Duke of Orléans Archduchess Maria Dorothea of Austria 5 November 1896 1896 Second cousins Louis Philippe I
Archduke Rainer Ferdinand of Austria Archduchess Maria Karoline of Austria 21 February 1852 1852 First cousins Leopold II, Holy Roman Emperor
Archduke Rainer Joseph of Austria Princess Elisabeth of Savoy 28 May 1820 1820 Second cousins Augustus III of Poland
Prince Ranieri, Duke of Castro Maria Carolina Zamoyska 12 September 1923 1923 First cousins Prince Francis, Count of Trapani
Ranuccio II Farnese, Duke of Parma Princess Margaret Yolande of Savoy
(first wife)
29 April 1660 1660 Second cousins (through Francesco I de' Medici, Grand Duke of Tuscany); Double third cousins Francesco I de' Medici, Grand Duke of Tuscany; Cosimo I de' Medici, Grand Duke of Tuscany; Ferdinand I, Holy Roman Emperor
Ranuccio II Farnese, Duke of Parma Isabella d'Este, Duchess of Parma
(second wife)
18 February 1664 1664 First cousins Ranuccio I Farnese, Duke of Parma
Ranuccio II Farnese, Duke of Parma Maria d'Este
(third wife)
1 October 1668 1668 First cousins Ranuccio I Farnese, Duke of Parma
Prince Raphael Rainer of Thurn and Taxis Princess Margarete of Thurn and Taxis 24 May 1932 1932 Second cousins Maximilian Karl, 6th Prince of Thurn and Taxis
Prince Rasso of Bavaria Archduchess Theresa of Austria 17 October 1955 1955 Third cousins Leopold II, Grand Duke of Tuscany
Prince René of Bourbon-Parma Princess Margaret of Denmark 9 June 1921 1921 Second cousins twice removed John VI of Portugal
Richard, 1st Earl of Cornwall Sanchia of Provence November 23, 1243 1243 Fourth cousins Humbert II, Count of Savoy
Richard of Conisburgh, 3rd Earl of Cambridge Anne de Mortimer May 1406 1406 First cousins twice removed Edward III of England
Richard Plantagenet, 3rd Duke of York Lady Cecily Neville 1429 1429 Second cousins Edward III of England
Richard of Shrewsbury, Duke of York Anne de Mowbray, 8th Countess of Norfolk 15 January 1478 1478 Second cousins once removed Ralph de Neville, 1st Earl of Westmorland and Joan Beaufort
Richard, 6th Prince of Sayn-Wittgenstein-Berleburg Princess Benedikte of Denmark 3 February 1968 1968 Fifth cousins once removed Charles Frederick, Grand Duke of Baden
Richard I of England Berengaria of Navarre May 12, 1191 1191 Fourth cousins Robert I, Duke of Burgundy
Richard II of England Anne of Bohemia
(first wife)
Westminster Abbey, 20 January 1382 1382 Fourth cousins Henry III, Duke of Brabant
Richard II of England Isabella of Valois
(second wife)
31 October 1396 1396 Half-third cousins Charles, Count of Valois
Richard III of England Lady Anne Neville Westminster Abbey, 12 July 1472 1472 First cousins once removed; second cousins once removed Ralph de Neville, 1st Earl of Westmorland and Joan Beaufort; Edmund of Langley, 1st Duke of York
Robert the Bruce Isabella of Mar
(first wife)
1296 1296 Sixth cousins once removed Duncan I of Scotland
Robert the Bruce Elizabeth de Burgh
(second wife)
1302 1302 Third cousins once removed William Marshal, 1st Earl of Pembroke
Robert I, Duke of Parma Princess Maria Pia of Bourbon-Two Sicilies
(first wife)
Rome, 5 April 1869 1869 Half-first cousins once removed Francis I of the Two Sicilies
Robert I, Duke of Parma Infanta Maria Antonia of Portugal
(second wife)
October 15, 1884 at Schloss Fischorn 1884 Second cousins once removed Charles IV of Spain and Maria Luisa of Parma
Robert II of Scotland Elizabeth Mure
(first wife)
22 November 1347 1347 Fourth cousins once removed William Comyn, Lord of Badenoch
Robert II of Scotland Euphemia de Ross
(second wife)
2 May 1355 1355 Third cousins once removed William Comyn, Lord of Badenoch
Robert, King of Naples Yolande of Aragon, Duchess of Calabria
(first wife)
23 March 1297 1297 Second cousins once removed Andrew II of Hungary
Robert, King of Naples Sancia of Majorca
(second wife)
17 June 1304 1304 Second cousins once removed Andrew II of Hungary
Prince Robert, Duke of Chartres Princess Françoise of Orléans 11 June 1863 1863 First cousins Louis Philippe I
Robert, Archduke of Austria-Este Princess Margherita of Savoy-Aosta 29 December 1953 1953 Fourth cousins once removed Charles IV of Spain
Duke Robert of Württemberg Archduchess Maria Immakulata of Austria 29 October 1900 1900 Double third cousins Leopold II, Holy Roman Emperor; Ferdinand II of the Two Sicilies
Romanos III Argyros Zoë Porphyrogenita November 10, 1028 1028 Second cousin once removed Romanos I Lekapenos
Rudolf, Crown Prince of Austria Princess Stéphanie of Belgium 10 May 1881 1881 Second cousins once removed Leopold II, Holy Roman Emperor
Rupprecht, Crown Prince of Bavaria Duchess Marie Gabrielle in Bavaria
(first wife)
10 July 1900 1900 Second cousins once removed Maximilian I Joseph of Bavaria
Rupprecht, Crown Prince of Bavaria Princess Antonia of Luxembourg
(second wife)
7 April 1921 1921 Third cousins Frederick, Duke of Saxe-Altenburg
Sancho II of Portugal Mécia Lopes de Haro 1245 1245 Second cousins once removed Afonso I of Portugal
Sancho Alfonso, 1st Count of Alburquerque Beatrice, Countess of Alburquerque 1373 1373 Double second cousins Sancho IV of Castile; Denis of Portugal
Infante Sebastian of Portugal and Spain Princess Maria Amalia of Bourbon-Two Sicilies
(first wife)
25 May 1832 1832 First cousins once removed Charles IV of Spain
Infante Sebastian of Portugal and Spain Infanta Maria Cristina of Spain
(second wife)
19 November 1860 1860 First cousins once removed Charles IV of Spain
Grand Duke Sergei Alexandrovich of Russia Princess Elisabeth of Hesse and by Rhine 15 June 1884 1884 First cousins once removed Louis II, Grand Duke of Hesse
Sigismund, Archduke of Austria Catherine of Saxony, Archduchess of Austria 1484 1484 First cousins twice removed Leopold III, Duke of Austria
Sigismund II Augustus Elizabeth of Austria
(first wife)
5 May 1543 1543 First cousins once removed Casimir IV Jagiellon
Sigismund II Augustus Catherine of Austria, Queen of Poland
(third wife)
23 June 1553 1553 First cousins once removed Casimir IV Jagiellon
Sigismund III Vasa Anne of Austria, Queen of Poland
(first wife)
31 May 1592 1592 Second cousins once removed Casimir IV Jagiellon
Sigismund III Vasa Constance of Austria
(second wife)
December 11, 1605 1605 Second cousins once removed Casimir IV Jagiellon
Prince Sigismund of Prussia Princess Charlotte of Saxe-Altenburg 11 July 1919 1919 Double fourth cousins Frederick William II of Prussia; Charles II, Grand Duke of Mecklenburg-Strelitz
Archduke Simeon of Austria Princess María of Bourbon-Two Sicilies 13 July 1996 1996 Half-second cousins once removed Robert I, Duke of Parma
Princess Sophie of Greece and Denmark Prince Christoph of Hesse
(first husband)
15 December 1930 1930 Second cousins once removed Queen Victoria
Princess Sophie of Greece and Denmark Prince George William of Hanover
(second husband)
23 April 1946 1946 Second cousins (though Christian IX of Denmark); third cousins (through Queen Victoria) Christian IX of Denmark; Queen Victoria
Stephen, King of England Matilda of Boulogne 1125 1125 Fourth cousins once removed Mathilde von Sachsen
Teodósio I, Duke of Braganza Isabel de Lencastre
(first wife)
1542 1542 First cousins Fernando II, Duke of Braganza
Teodósio I, Duke of Braganza Beatriz of Lencastre
(second wife)
1559 1559 Third cousins once removed Edward, King of Portugal
Prince Thomas, Duke of Genoa Princess Isabella of Bavaria 21 May 1883 1883 Third cousins Ferdinand I of the Two Sicilies
Thomas of Woodstock, 1st Duke of Gloucester Eleanor de Bohun 1376 1376 Second cousins once removed Edward I of England
Thomas of Lancaster, 1st Duke of Clarence Margaret Holland, Duchess of Clarence November 1411 1411 Second cousins once removed Henry, 3rd Earl of Lancaster
Prince Tomislav of Yugoslavia Princess Margarita of Baden 5 June 1957 1957 Third cousins once removed Queen Victoria
Ulrich, Duke of Mecklenburg Elizabeth of Denmark, Duchess of Mecklenburg 14 February 1556 1556 First cousins twice removed Christian I of Denmark
Umberto I of Italy Princess Margherita of Savoy 21 April 1868 1868 First cousins Charles Albert of Sardinia
Umberto II of Italy Marie José of Belgium 8 January 1930 1930 Third cousins once removed Maximilian I Joseph of Bavaria
Prince Valdemar of Denmark Princess Marie of Orléans 20 October 1885 1885 Third cousins once removed Duke Louis of Mecklenburg-Schwerin
Valdemar II of Denmark Dagmar of Bohemia 1205 1205 Third cousins Vratislaus II of Bohemia
Victor, Prince Napoléon Princess Clémentine of Belgium 14 November 1910 1910 Second cousins once removed Leopold II, Holy Roman Emperor
Victor Amadeus I, Duke of Savoy Christine of France 10 February 1619 1619 Third cousins Philip I of Castile and Joanna of Castile
Victor Amadeus I, Prince of Carignano Maria Vittoria of Savoy 7 November 1714 1714 Second cousins once removed Charles Emmanuel I, Duke of Savoy
Victor Amadeus II of Sardinia Anne Marie d'Orléans 10 April 1684 1684 Second cousins Henry IV of France
Victor Amadeus III of Sardinia Maria Antonia Ferdinanda of Spain 12 April 1750 1750 Double third cousins Victor Amadeus I, Duke of Savoy; Louis XIII of France
Victor Emmanuel I of Sardinia Maria Theresa of Austria-Este, Queen of Sardinia 25 April 1789 1789 Half-third cousins Philippe I, Duke of Orléans
Victor Emmanuel II of Italy Archduchess Adelaide of Austria Palazzina di caccia of Stupinigi, 12 April 1842 1842 First cousins Charles Emmanuel, Prince of Carignano
Princess Victoria Melita of Saxe-Coburg and Gotha Ernest Louis, Grand Duke of Hesse and by Rhine
(first husband)
Schloss Ehrenburg, Coburg, 9 April 1894 1894 First cousins Queen Victoria
Princess Victoria Melita of Saxe-Coburg and Gotha Grand Duke Cyril Vladimirovich of Russia
(second husband)
Tegernsee, 8 October 1905 1905 First cousins Alexander II of Russia
Princess Victoria of Hesse and by Rhine Prince Louis of Battenberg Darmstadt, 30 April 1884 1884 First cousins once removed Louis II, Grand Duke of Hesse and by Rhine
Queen Victoria of the United Kingdom Prince Albert of Saxe-Coburg and Gotha Chapel Royal, St. James's Palace, 10 February 1840 1840 First cousins Francis, Duke of Saxe-Coburg-Saalfeld
Vincenzo Gonzaga, Duke of Mantua Margherita Farnese
(first wife)
2 March 1581 1581 Second cousins once removed Philip I of Castile and Joanna of Castile
Vincenzo Gonzaga, Duke of Mantua Eleanor de' Medici
(second wife)
29 April 1584 1584 First cousins Ferdinand I, Holy Roman Emperor
Grand Duke Vladimir Alexandrovich of Russia Duchess Marie of Mecklenburg-Schwerin 28 August 1874 1874 Second cousins Frederick William III of Prussia
Walter Stewart, 6th High Steward of Scotland Marjorie Bruce 1315 1315 Fourth cousins once removed Walter Stewart, 3rd High Steward of Scotland
Prince Welf Henry of Hanover Princess Alexandra of Ysenburg and Büdingen 20 September 1960 1960 Fourth cousins Charles Frederick, Grand Duke of Saxe-Weimar-Eisenach
Wilhelm II, German Emperor Princess Augusta Victoria of Schleswig-Holstein-Sonderburg-Augustenburg
(first wife)
27 February 1881 1881 Half-second cousins Princess Victoria of Saxe-Coburg-Saalfeld
Wilhelm II, German Emperor Hermine Reuss of Greiz
(second wife)
5 November 1922 1922 Fifth cousins George II of Great Britain
Wilhelm, German Crown Prince Duchess Cecilie of Mecklenburg-Schwerin 6 June 1905 1905 Third cousins Frederick William III of Prussia
Prince Wilhelm of Prussia Princess Maria Anna of Hesse-Homburg 1804 1804 First cousins Louis IX, Landgrave of Hesse-Darmstadt
Prince Wilhelm, Duke of Södermanland Grand Duchess Maria Pavlovna of Russia 3 May 1908 1908 Third cousins Frederick William III of Prussia
Duke Wilhelm in Bavaria Countess Palatine Maria Anna of Zweibrücken-Birkenfeld 30 January 1780 1780 Second cousins once removed Christian I, Count Palatine of Birkenfeld-Bischweiler
Wilhelm Friedrich, Duke of Schleswig-Holstein Princess Marie Melita of Hohenlohe-Langenburg 5 February 1916 1916 Second cousins Ernst I, Prince of Hohenlohe-Langenburg
Wilhelmina of the Netherlands Prince Henry, Duke of Mecklenburg-Schwerin 7 February 1901 1901 Third cousins Frederick William II of Prussia
William the Conqueror Matilda of Flanders 1051 1051 Third cousins once removed Fulk II, Count of Anjou
William the Lion Ermengarde de Beaumont 5 September 1186 1186 Fourth cousins Robert I, Duke of Normandy
William the Silent Anna of Saxony 24 August 1561 1561 Third cousins once removed Louis I, Landgrave of Hesse
William I, Count of Boulogne Isabel de Warenne, Countess of Surrey 1148 1148 Fourth cousins Robert II of France
William I, German Emperor Augusta of Saxe-Weimar-Eisenach 11 June 1829 1829 Second cousins Louis IX, Landgrave of Hesse-Darmstadt
William I of the Netherlands Princess Wilhelmine of Prussia Berlin, 1 October 1791 1791 First cousin Prince Augustus William of Prussia
William I of Württemberg Pauline Therese of Württemberg
(third wife)
5 April 1820 1820 First cousins Frederick II Eugene, Duke of Württemberg
William I, Elector of Hesse Princess Wilhelmina Caroline of Denmark 1 September 1764 1764 First cousins George II of Great Britain
William II of Württemberg Princess Marie of Waldeck and Pyrmont
(first wife)
15 February 1877 1877 Second cousins once removed Frederick I of Württemberg
William II of Württemberg Charlotte of Schaumburg-Lippe
(second wife)
8 April 1886 1886 Fifth cousins Louis VIII, Landgrave of Hesse-Darmstadt
William II of the Netherlands Anna Pavlovna of Russia 21 February 1816 1816 Third cousins Frederick William I of Prussia
William III of the Netherlands Princess Sophie of Württemberg
(first wife)
Stuttgart, 18 June 1839 1839 First cousins Paul I of Russia
William III of the Netherlands Emma of Waldeck and Pyrmont
(second wife)
7 January 1879 1879 Second cousins twice removed Frederick II Eugene, Duke of Württemberg
William III of England Mary II of England 4 November 1677 1677 First cousins Charles I of England
William III, Landgrave of Thuringia Anne of Austria, Landgravine of Thuringia 2 June 1446 1446 Double fourth cousins Albert I of Germany; Wartislaw IV, Duke of Pomerania
William IV of the United Kingdom Adelaide of Saxe-Meiningen 11 July 1818 1818 Third cousins once removed Ernest I, Duke of Saxe-Gotha
William IV, Prince of Orange Anne, Princess Royal and Princess of Orange 25 March 1734 1734 Fourth cousins once removed William the Silent
William V, Prince of Orange Wilhelmina of Prussia, Princess of Orange 4 October 1767 1767 Second cousins George I of Great Britain
William V, Duke of Bavaria Renata of Lorraine 22 February 1568 1568 Second cousins Philip I of Castile and Joanna of Castile
William VIII, Landgrave of Hesse-Kassel Dorothea Wilhelmine of Saxe-Zeitz 27 September 1717 1717 Second cousins George William, Elector of Brandenburg
William, Duke of Nassau Princess Pauline of Württemberg 23 April 1829 1829 Third cousins once removed George II of Great Britain
William, Prince of Hohenzollern Princess Maria Teresa of Bourbon-Two Sicilies
(first wife)
27 June 1889 1889 Third cousins once removed Charles IV of Spain
William, Prince of Hohenzollern Princess Adelgunde of Bavaria
(second wife)
20 January 1915 1915 Third cousins once removed Leopold II, Holy Roman Emperor
William, Prince of Wied Princess Marie of the Netherlands 18 July 1871 1871 Second cousins once removed Charles II, Grand Duke of Mecklenburg-Strelitz
Prince William, Duke of Cambridge Catherine, Duchess of Cambridge 29 April 2011 2011 11th cousins once removed (through Sir William Blakiston and Jane Lambton);
Fourteenth cousins once removed (through Sir Thomas Fairfax and wife Anne Gascoigne)
Sir William Blakiston and Jane Lambton; Sir Thomas Fairfax and Anne Gascoigne
Prince William of Baden Duchess Elisabeth Alexandrine of Württemberg 16 October 1830 1830 Second cousins once removed John William Friso, Prince of Orange
Prince William of Baden Princess Maria Maximilianovna of Leuchtenberg 11 February 1863 1863 Fourth cousins once removed Frederick William I of Prussia
Prince William of Schaumburg-Lippe Princess Bathildis of Anhalt-Dessau 30 May 1862 1862 Third cousins once removed Christian III, Count Palatine of Zweibrücken
William, Duke of Jülich-Cleves-Berg Maria of Austria, Duchess of Jülich-Cleves-Berg 18 July 1546 1546 Fourth cousins Ernest, Duke of Austria
Duke William of Mecklenburg-Schwerin Princess Alexandrine of Prussia 9 December 1865 1865 First cousins Frederick William III of Prussia
William the Younger, Duke of Brunswick-Lüneburg Dorothea of Denmark, Duchess of Brunswick-Lüneburg 12 October 1561 1561 Second cousins John Cicero, Elector of Brandenburg
William Ernest, Grand Duke of Saxe-Weimar-Eisenach Princess Caroline Reuss of Greiz
(first wife)
30 April 1903 1903 Third cousins once removed Charles Christian, Prince of Nassau-Weilburg
William Ernest, Grand Duke of Saxe-Weimar-Eisenach Princess Feodora of Saxe-Meiningen
(second wife)
14 January 1910 1910 Third cousins Georg I, Duke of Saxe-Meiningen
Prince William Frederick, Duke of Gloucester and Edinburgh Princess Mary of Great Britain 22 July 1816 1816 First cousins Frederick, Prince of Wales
William Frederick, Prince of Wied Princess Pauline of Württemberg 29 October 1898 1898 Half-second cousins William, Duke of Nassau
Władysław IV, king of Poland Cecilia Renata of Austria
(first wife)
Vienna, 9 August 1637 1637 First cousins Charles II, Archduke of Austria and Maria Anna of Bavaria
Prince Wolfgang of Hesse Princess Marie Alexandra of Baden 17 September 1924 1924 Second cousins once removed Prince William of Hesse-Kassel
Wolfgang Wilhelm, Count Palatine of Neuburg Magdalene of Bavaria 11 November 1613 1613 Second cousins Ferdinand I, Holy Roman Emperor
Wolrad, Prince of Schaumburg-Lippe Princess Bathildis of Schaumburg-Lippe April 1925 1925 Second cousins George William, Prince of Schaumburg-Lippe

Outside Europe[edit]

Aristocracy[edit]

Person Spouse Married Relationship Common ancestor(s)
Lady Frances Brandon Henry Grey, 1st Duke of Suffolk
(first husband)
Southwark, London, 1533 Half-second cousins Elizabeth Woodville
Robert Dudley, 1st Earl of Leicester Amy Robsart
(first wife)
4 June 1550 Sixth cousins once removed Thomas de Beauchamp, 11th Earl of Warwick
Robert Dudley, 1st Earl of Leicester Lettice Knollys
(second wife)
Wanstead Park, Essex, 21 September 1578 Sixth cousins Thomas de Beauchamp, 11th Earl of Warwick
Jessica Mitford Esmond Romilly 18 May 1937 second cousin
Pedro Sánchez de Tagle, 2nd Marquis of Altamira Luisa Sánchez de Tagle
(daughter of Luis Sánchez de Tagle, 1st Marquis of Altamira)
First cousins Don Anselmo Sánchez de Tagle
María de la Paz Rodríguez Albuerne y Girón
(daughter of Manuel Rodriguez de Albuerne y Pérez de Tagle, 5th Marquis of Altamira)
José María Trespalacios Rodríguez de Albuerne First cousins Don Juan Rodríguez de Albuerne and Luisa Pérez de Tagle, 4th Marquesa of Altamira
Humphrey Stafford, 1st Duke of Buckingham Lady Anne Neville Raby Castle, County Durham, before 18 October 1424 Second cousins Edward III of England
Humphrey Stafford, Earl of Stafford Lady Margaret Beaufort Third cousins Edward III of England
Roger Mortimer, 4th Earl of March Lady Alianore Holland 7 October 1388 Third cousins once removed Edward I of England
Thomas Holland, 2nd Earl of Kent Lady Alice FitzAlan 10 April 1364 Third cousins Henry III of England
Lady Eleanor Neville Richard le Despenser, 4th Baron Burghersh
(first husband)
Second cousins Edward III of England
Lady Eleanor Neville Henry Percy, 2nd Earl of Northumberland
(second husband)
Second cousins Ralph Neville, 2nd Baron Neville de Raby
John Beaufort, 1st Earl of Somerset Lady Margaret Holland 27 September 1397 Third cousins Edward I of England
Lady Elizabeth Percy Ralph Neville, 2nd Earl of Westmorland
(second husband)
1426 Second cousins once removed Ralph Neville, 2nd Baron Neville de Raby
Henry Bourchier, 1st Earl of Essex Isabel of Cambridge Second cousins Edward III of England
Edmund Mortimer, 5th Earl of March Lady Anne Stafford Second cousins Edward III of England
John de Mowbray, 3rd Duke of Norfolk Eleanor Bourchier Second cousins once removed Edward III of England
Lady Katherine Neville John de Mowbray, 2nd Duke of Norfolk
(first husband)
12 January 1411 Fourth cousins Edward I of England
Henry Fitzalan-Howard, 15th Duke of Norfolk Gwendolen Constable-Maxwell, 12th Lady Herries of Terregles 5 February 1904 First cousins once removed Henry Howard, 13th Duke of Norfolk
Giovanni dalle Bande Nere Maria Salviati 15 November 1516 Third cousins once removed Giovanni di Bicci de' Medici
Laudomia de' Medici Piero Strozzi 1539 Fourth cousins once removed Giovanni di Bicci de' Medici
Laudomia de' Medici Alamanno Salviati Fourth cousins Giovanni di Bicci de' Medici
Maddalena de' Medici Roberto Strozzi Fourth cousins once removed Giovanni di Bicci de' Medici
Lady Catherine Grey Edward Seymour, 1st Earl of Hertford
(second husband)
Hertford House, Canon Row, London, c. 27 November 1560 Sixth cousins once removed Philippa, 5th Countess of Ulster
Lady Jane Grey Lord Guildford Dudley Durham House, London, 21 May 1553 Third cousins once removed Elizabeth Ferrers, 6th Baroness Ferrers of Groby
Lord Edward Cavendish Emma Lascelles 3 August 1865 First cousins George Howard, 6th Earl of Carlisle
William Cavendish, 7th Duke of Devonshire Lady Blanche Georgiana Howard 6 August 1829 Second cousins William Cavendish, 4th Duke of Devonshire and Charlotte Boyle, 6th Baroness Clifford
Isabella Appiani, Princess of Piombino Paolo Giordano II Orsini, Duke of Bracciano
(second husband)
Rome, 1622 Third cousins Jacopo Salviati
Henry Sturt, 1st Baron Alington Lady Augusta Bingham
(first wife)
10 September 1853 First cousins Robert Brudenell, 6th Earl of Cardigan
William Donn de Burgh, 3rd Earl of Ulster Maud of Lancaster before 16 November 1327 Third cousins once removed Henry III of England
George Spencer-Churchill, 6th Duke of Marlborough Lady Jane Stewart
(first wife)
St George's, Hanover Square, London, 13 January 1819 First cousins John Stewart, 7th Earl of Galloway
George Spencer-Churchill, 6th Duke of Marlborough Jane Stewart
(third wife)
18 October 1851 First cousins John Stewart, 7th Earl of Galloway
Lady Louisa Spencer-Churchill
(daughter of George Spencer-Churchill, 6th Duke of Marlborough)
The Hon. Robert Spencer
(son of Francis Spencer, 1st Baron Churchill)
4 July 1845 First cousins once removed George Spencer, 4th Duke of Marlborough
William Kerr, 1st Earl of Lothian Anne Kerr, 3rd Countess of Lothian 1630 Fifth cousins once removed Andrew Kerr of Altonburn and Cessford
William FitzRoy
(son of Charles FitzRoy, 1st Baron Southampton)
Lady Elizabeth FitzRoy
(daughter of Augustus FitzRoy, 3rd Duke of Grafton)
4 July 1811 First cousins Lord Augustus FitzRoy
George Waldegrave, 4th Earl Waldegrave Elizabeth Waldegrave, Countess Waldegrave 5 May 1782 First cousins James Waldegrave, 1st Earl Waldegrave
Robert Grosvenor, 5th Duke of Westminster Hon. Viola Lyttelton 3 December 1946 Second cousins William Cavendish, 2nd Baron Chesham
William FitzClarence, 2nd Earl of Munster Wilhelmina Kennedy-Erskine 17 April 1855 First cousins William IV of the United Kingdom
Nathan Rothschild, 1st Baron Rothschild Emma Louise von Rothschild 16 April 1867 Second cousins Mayer Amschel Rothschild
George Mountbatten, 2nd Marquess of Milford Haven Countess Nadejda Mikhailovna de Torby 15 November 1916 Double third cousins once removed Charles Frederick, Grand Duke of Baden; Charles Louis, Hereditary Prince of Baden
Jaime Álvares Pereira de Melo, 3rd Duke of Cadaval Luísa, Duchess of Cadaval Fourth cousins Jaime, Duke of Braganza
Philippe II de Croÿ Anne de Croÿ Third cousins Jean II de Croÿ

See also[edit]

References[edit]

Notes
  1. ^ This Day in History in 1828, www.history.com. Retrieved 3-13-2008.
  2. ^ Instituto Dominicano de Genealogía, Inc
  3. ^ HOASM: Johann Sebastian Bach, Here of a Sunday Morning. Retrieved 3-13-2008.
  4. ^ Cápsulas Genealógicas
  5. ^ Goodrich, Charles A. (1829). Lives of the Signers to the Declaration of Independence, pp. 131–38. New York: William Reed & Co.
  6. ^ "Christine Boutin poursuivra en justice ceux qui l'attaquent sur son mari (et cousin germain)", ozap.com, 5-29-2013.
  7. ^ Bob Ward. Dr. Space: The Life of Wernher von Braun. p. 72. 
  8. ^ Charles Bulfinch biography, nndb. Retrieved 3-13-2008.
  9. ^ Floride Bonneau Colhoun Calhoun (Mrs. John C. Calhoun), Clemson University. Retrieved 3-13-2008.
  10. ^ Jeanne Calment, World's Elder, Dies at 122, The New York Times. Retrieved 3-13-2008.
  11. ^ THREE GENERATIONS OF CARROLLS, Charles Carroll House. Retrieved 3-13-2008.
  12. ^ Intimate Disclosures in Darwin Letters, The New York Times, 8-29-1915. Retrieved 3-13-2008.
  13. ^ Peter Raven & George Johnson (1995). Understanding Biology 3rd Edition. Wm. C. Brown Communications. p. 287. ISBN 0-697-22213-6. 
  14. ^ "Alfred I. duPont Papers" (PDF). Archived from the original (PDF) on February 21, 2007. Retrieved 2008-05-19. 
  15. ^ Albert Einstein – Great Minds, Great Thinkers, edInformatics. Retrieved 3-13-2008.
  16. ^ Notable Kin: NEW HAMPSHIRE, RHODE ISLAND, AND CONSTITUTION SIGNERS, New England Historic Genealogical Society. Retrieved 3-13-2008. Archived November 25, 2005, at the Wayback Machine.
  17. ^ Notable Kin: Boston Cousins of Queen Victoria and Yankee Ancestors of Mrs. Thomas Philip, New England Historic Genealogical Society. Retrieved 3-13-2008.
  18. ^ Cápsulas genealógicas: Santiago, la cuna de los Espaillat
  19. ^ Beau Riffenburgh. Encyclopedia of the Antarctic – Volume 1. Taylor & Francis. p. 424. 
  20. ^ FABIO FIALLO Popular poeta romántico y opositor resuelto a la intervención militar del 16
  21. ^ Goodwin, Doris Kearns (2001). The Fitzgeralds and the Kennedys: An American Saga. Simon and Schuster. pp. 88–89.
  22. ^ Carlo Gambino, His Rise As New York's Mafia King, John J. Flood and Jim McGough. Retrieved 3-13-2008.
  23. ^ Jocelyn Van Tuyl (2012). Andre Gide and the Second World War: A Novelist's Occupation. SUNY Press. p. 5. 
  24. ^ Biographies – Charlotte Perkins Gilman, Gale Group. Retrieved 3-13-2008. Archived April 18, 2008, at the Wayback Machine.
  25. ^ Jeffrey Ian Ross. Encyclopedia of Street Crime in America. SAGE. p. 177. 
  26. ^ Spalding, Frances. Duncan Grant: A Biography. Random House. ISBN 0-7126-6640-0. 
  27. ^ Edward and Nina Grieg, Peter Hughes. Retrieved 3-13-2008. Archived March 14, 2008, at the Wayback Machine.
  28. ^ The Bloodlines of Statesment and Noblemen, Pat Roberts. Retrieved 3-13-2008.
  29. ^ Alan O. Ebenstein (2001). Friedrich Hayek: A Biography. Basingstoke: Palgrave Macmillan Trade. p. 169. ISBN 978-0312233440. 
  30. ^ Monica Partridge. Alexander Herzen: 1812–1870. p. 21. 
  31. ^ Notable Kin – The Flowering of New England, Part Two: The Poets Bryant, Holmes, Longfellow, J.R. Lowell, and Whittier[dead link], Gary Boyd Roberts. Retrieved 3-13-2008.
  32. ^ Notable Kin: NEW HAMPSHIRE, RHODE ISLAND, AND CONSTITUTION SIGNERS, New England Historic and Genealogical Society. Retrieved 3-13-2008. Archived November 25, 2005, at the Wayback Machine.
  33. ^ Zee James – Wife of Jesse James, Kathy Weiser. Retrieved 3-13-2008.
  34. ^ Roberts, Gary Boyd (April–May 1993). "The Royal Descents of Jane Pierce, Alice and Edith Roosevelt, Helen Taft, Eleanor Roosevelt, and Barbara Bush". American Ancestors. Boston: New England Historic Genealogical Society. Archived from the original on September 27, 2014. Retrieved 18 October 2014. ...Mrs. Martha Wayles Skelton Jefferson (1748–82), wife of Bathurst Skelton and Thomas Jefferson, was a third cousin of her second husband... 
  35. ^ Subtle change of seasons, The Economist. Retrieved 8-06-2010.
  36. ^ In My Life: Arthur Henry King
  37. ^ Nobusuke Kishi Biography, Encyclopedia of World Biography. Retrieved 3-13-2008.
  38. ^ Howard Maxford. David Lean. p. 14. 
  39. ^ Myra Lewis-Williams Interview
  40. ^ The Straight Dope: What's wrong with cousins marrying?
  41. ^ Harvard's Unitarian Presidents – Abbott Lawrence Lowell, Katia Savchuk. Retrieved 3-13-2008. Archived March 3, 2008, at the Wayback Machine.
  42. ^ The Great Enterprise, CBC. Retrieved 3-13-2008.
  43. ^ Gerardo Machado, History of Cuba. Retrieved 1-29-2010.
  44. ^ Conversations with Maltus, Dr Suzanne Rickard. Retrieved 3-13-2008. Archived August 28, 2007, at the Wayback Machine.
  45. ^ [1], Delarivier Manely
  46. ^ Mao's paternal grandmother and Luo's paternal grandfather were siblings
  47. ^ Brigadier General Francis Marion of the American Army, myrevolutionarywar.com. Retrieved 3-13-2008.
  48. ^ Abraham Maslow, nndb. Retrieved 3-13-2008.
  49. ^ González Hernández, Julio Amable (2 April 2011). "Parentescos entre Primeras Damas y Presidentes (4 de 4)" (in Spanish). Dominican Institute of Genealogy. Archived from the original on 9 July 2012. Retrieved 3 May 2015. 
  50. ^ Madeleine Milhaud: Actress wife of the composer, The Independent. Retrieved 9-6-2010.
  51. ^ [2], "Marina Mora se casa con su primo hermano ". Retrieved 9-21-2010.
  52. ^ Morse Papers, Library of Congress. Retrieved 3-13-2008.
  53. ^ Outlines of English and American Literature, William J. Long. Retrieved 3-13-2008.
  54. ^ Tyszkiewicz, Teresa (1971). Bolesław Prus. Warsaw: Państwowe Zakłady Wydawnictw Szkolnych. pp. 28–30. 
  55. ^ Biography of Sergei Rachmaninoff, Sonal Panse. Retrieved 3-13-2008.
  56. ^ Arup Kr De, "Ties that Bind" by The Statesman, Calcutta, 27 April 2008. Quote: "Satyajit Ray had an unconventional marriage. He married Bijoya (born 1917), youngest daughter of his eldest maternal uncle, Charuchandra Das, in 1948 in a secret ceremony in Bombay after a long romantic relationship that had begun around the time he left college in 1940. The marriage was reconfirmed in Calcutta the next year at a traditional religious ceremony."
  57. ^ Biography of Eleanor Roosevelt, FDR Library. Retrieved 3-13-2008.
  58. ^ The Wife Tells All, Time Magazine. Retrieved 3-13-2008.
  59. ^ This much I know: Greta Scacchi, actor, 48, Sussex, The Observer. Retrieved 1-04-2009.
  60. ^ Igor Stravinsky, nndb. Retrieved 3-13-2008.
  61. ^ Shogun and Samurai – Tales of Nobunaga, Hideyoshi, and Ieyasu, Okanoya Shigezane. Retrieved 3-13-2008.
  62. ^ Rodríguez Demorizi, Emilio (1968). Hojas de Servicios del Ejército Dominicano – Volumen 1. Editora del Caribe. pp. 391–396. 
  63. ^ Williams, Raymond L. (2001), Vargas Llosa: otra historia de un deicidio, Mexico: Taurus, p. 54, ISBN 968-19-0814-7 
  64. ^ Martin van Buren, The New Netherland Institute. Retrieved 3-13-2008.
  65. ^ University of St. Andrews: William Gordon Welchman [3].
  66. ^ H.G. Wells, Free Online Library. Retrieved 3-13-2008.
  67. ^ [4], "Society for American Baseball Research"/ Retrieved 4-8-2012.
  68. ^ William Whipple and the Declaration of Independence, Speech given by Comrade Joseph Foster, Paymaster U.S. Navy, Portsmouth, New Hampshire, 11-20-1892. Retrieved 3-13-2008.
  69. ^ a b Also half-uncle and half-niece
  70. ^ a b c d e f g h i j k l m n o p q r s t Also uncle and niece
  71. ^ Traditio 23. Canonical Implications of Richard III's Plan to Marry His Niece. Kelly, H.A. 1967 pp. 269-311.
  72. ^ Les Cahiers de Saint Louis. Dupont, Jacques and Saillot, Jacques. 1987. Angers et Nantes, p. 755. (In French).
  73. ^ Europäische Stammtafeln Neue Folge. Armagnac, Cte d' (Lomagne). Schwennicke, Detlev, editor. Volume III, Section 3, Table 571. (In German)
  74. ^ Also aunt and nephew
  75. ^ "King Tutankhamun: Latest Tests Prove the Boy Pharaoh was Product of Incest; from google (tutankhamun incest) result 1". 
  76. ^ Both were great-grandchildren of the Jiaqing Emperor
  77. ^ Both were great-grandchildren of General Dugu Xin
  78. ^ His father (Emperor Gaozong) and her mother (Princess Changle) were siblings.
  79. ^ They were both grandchildren of Emperor Gaozu of Tang and his wife Duchess Dou
  80. ^ Xue Shao was the son of Princess Chengyang, Emperor Gaozong's sister, by her second husband Xue Yao
  81. ^ a b Both were grandchildren of Wu Shihuo, Duke Ding of Ying.
  82. ^ Eldest son of Wu Zetian's nephew Wu Chengsi, Prince Xuan of Wei.
  83. ^ Both were great-grandchildren of Wu Shihuo, Duke Ding of Ying. Princess Anle was the granddaughter of Wu Shihuo's second daughter Empress Wu Zetian, while Wu Chongxun was the grandson of Wu Shihuo's elder son Wu Yuanqing.
  84. ^ Second son of Wu Zetian's nephew Wu Chengsi, Prince Xuan of Wei.