Maximilian de Beauharnais, 3rd Duke of Leuchtenberg
|This article may be expanded with text translated from the corresponding article in the Russian Wikipedia. (August 2012)|
|Maximilian de Beauharnais|
|Portrait by Karl Briullov (1849)|
|Reign||28 March 1835 – 1 November 1852|
|Predecessor||Auguste de Beauharnais|
|Spouse||Grand Duchess Maria Nikolaevna of Russia|
Maria, Princess Louis William of Baden
Nicholas, Duke of Leuchtenberg
Eugenia, Duchess Alexander of Oldenburg
Eugen, Duke of Leuchtenberg
Georgi, Duke of Leuchtenberg
|Maximilian Joseph Eugene Auguste Napoleon|
|House||House of Beauharnais|
|Father||Eugène de Beauharnais|
|Mother||Princess Augusta of Bavaria|
|Born||1 November 1817
Munich, Kingdom of Bavaria
|Died||1 November 1852
St.Petersburg, Russian Empire
Maximilian Joseph Eugene Auguste Napoleon de Beauharnais (2 October 1817 Munich – 1 November 1852 St.Petersburg), 3rd Duke of Leuchtenberg, was the husband of Grand Duchess Maria Nikolayevna of Russia and first cousin of Emperor Napoleon III of the French. He was a grandson of Napoleon I's first wife, the Empress Josephine, by her prior marriage to Alexandre de Beauharnais.
He was born as the second son of Eugène de Beauharnais and Princess Augusta Amalia Ludovika Georgia of Bavaria. His maternal grandparents were Maximilian I, King of Bavaria and his first wife Marie Wilhelmine Auguste, Landgravine of Hesse-Darmstadt.
His maternal grandmother Marie Wilhelmine Auguste was a daughter of Georg Wilhelm of Hesse-Darmstadt, younger son of Louis VIII, Landgrave of Hesse-Darmstadt.
He was a brother of:
- Auguste de Beauharnais, Duke of Santa Cruz, Consort prince of Queen Maria II of Portugal;
- Amélie de Beauharnais, Empress consort of Pedro I of Brazil;
- Josephine of Leuchtenberg, queen consort of Oscar I of Sweden.
Duke of Leuchtenberg 
His maternal grandfather Maximilian of Bavaria appointed Eugène de Beauharnais, 1st Duke of Leuchtenberg on 14 November 1817. The title came with the effective administration of the Principality of Eichstätt. Maximilian was named "Prince of Leuchtenburg" and became the second-in-line heir to the Duchy.
Auguste eventually married Queen Maria II of Portugal but died childless on 28 March 1835. Maximilian became the 3rd Duke of Leuchtenberg at this point.
His father-in-law Nicholas I granted to him on 14 July 1839 the Russian and Finnish style Imperial Highness, a rank he was entitled to as a descendant of the extended dynasty of Napoleon I of France. His father was an adoptive son of Napoleon.
- Princess Alexandra Maximilianovna (1840–1843) died in childhood
- Princess Maria Maximilianovna (1841–1914) m. Prince Wilhelm of Baden (1829–1897), younger son of Leopold, Grand Duke of Baden
- Nicholas Maximilianovich, Duke of Leuchtenberg (1843–1891)
- Princess Eugenia Maximilianovna (1845–1925) m. Duke Alexander Petrovich of Oldenburg (1844–1932)
- Eugen Maximilianovich, Duke of Leuchtenberg (1847–1901) m. Daria Opotchinina (1845–1870) m. Zinaida Skobeleva (1856–1899)
- Prince Sergei Maximilianovich (1849–1877) Killed in the Russo-Turkish war
- Georgi Maximilianovich, Duke of Leuchtenberg (1852–1912) m.(1) Duchess Therese Petrovna of Oldenburg (1852–1883) m.(2) Anastasia of Montenegro (1868–1935)
Further descendants 
Through his oldest surviving daughter Princess Maria Maximilianovna of Leuchtenberg (1841–1914), he is the grandfather of Prince Maximilian of Baden (1867–1929), Chancellor of Germany during World War I.
His youngest daughter Princess Eugenia Maximilianovna of Leuchtenberg (1845–1925) married Duke Alexander Petrovich of Oldenburg (1844–1932), the grandson of Grand Duchess Catherine Pavlovna of Russia, and became the mother of Duke Peter Alexandrovich of Oldenburg (1868–1924), the divorced husband of Grand Duchess Olga Alexandrovna of Russia (1882–1960), the youngest sister of Nicholas II of Russia.
|This section does not cite any references or sources. (August 2012)|
|Ancestors of Maximilian de Beauharnais, 3rd Duke of Leuchtenberg|
- Marek, Miroslav. "A Beauharnais genealogy". Genealogy.EU.
- A listing of the Ducal family of Leuchtenberg
Maximilian de Beauharnais, 3rd Duke of LeuchtenbergBorn: 2 October 1817 Died: 1 November 1852
Auguste de Beauharnais
|Duke of Leuchtenberg
28 March 1835 – 1 November 1852