Grand Duke of Luxembourg

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Grand Duke of Luxembourg
Armoiries Luxembourg Bourbon avec ornements.svg
Henri of Luxembourg (2009).jpg
Style His/Her Royal Highness
Heir apparent Guillaume, Hereditary Grand Duke of Luxembourg
First monarch William I of the Netherlands (1815) (personal union began)
Adolphe, Grand Duke of Luxembourg, (after 1890)
Formation March 15, 1815
Residence Grand Ducal Palace in Luxembourg
Website (french only)

The Grand Duke of Luxembourg is the monarchial head of state of Luxembourg. Luxembourg has been a grand duchy since 15 March 1815, when it was elevated from a duchy, and was in personal union with the Netherlands until 1890. Since 1815, there have been nine monarchs of Luxembourg, including the incumbent, Henri.

Car Flag

Constitutional role[edit]

The Constitution of Luxembourg defines the grand duke's position:

After a constitutional change (to article 34) in December 2008 resulting from Henri's refusal to sign a law legalizing euthanasia, laws now take effect without the grand duke's assent.[2] As a result, the grand duke no longer has any formal role in the legislative process, but his task to promulgate the law as chief executive remains.


Succession to the throne was governed by Salic law, as dictated by the Nassau Family Pact, first adopted on 30 June 1783.[1] The right to reign over Luxembourg was until June 2011 passed by agnatic-cognatic primogeniture within the House of Nassau, as stipulated under the 1815 Final Act of the Congress of Vienna and as confirmed by the 1867 Treaty of London.[1] The Nassau Family Pact itself can be amended by the usual legislative process, having been so on 10 July 1907 to exclude the Count of Merenberg branch of the House, which was descended from a morganatic marriage.[3]

An heir apparent may be granted the style 'Hereditary Grand Duke'. The current heir apparent is Hereditary Grand Duke Guillaume. In June 2011, agnatic primogeniture was dropped in favor of absolute primogeniture, allowing any legitimate female descendants within the House of Nassau to be included in the line of succession.[4]

Full titles[edit]

COA Luxembourg LUX lesser.svg
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The current grand duke, Henri, bears the full style: By the Grace of God, Grand Duke of Luxembourg, Duke of Nassau, Count Palatine of the Rhine, Count of Sayn, Königstein, Katzenelnbogen and Diez, Burgrave of Hammerstein, Lord of Mahlberg, Wiesbaden, Idstein, Merenberg, Limburg and Eppstein. It should, however, be noted that many of the titles are held without regard to the strict rules of Salic inheritance.

The Grand Ducal Standard is the official flag of the Sovereign.

List of grand dukes[edit]

Since 1815, there have been seven grand dukes of Luxembourg and two grand duchesses regnant of Luxembourg. Only three Dutch monarchs have used and controlled both the land and the title as the Grand Duke of Luxembourg until 1890.

  • William I (1815–1840) First Dutch king to rule as Grand Duke of Luxembourg.
  • William II (1840–1849) Second Dutch king to rule as Grand Duke of Luxembourg.
  • William III (1849–1890) Last Dutch king to rule as Grand Duke of Luxembourg.

Grand Dukes of Luxembourg after William III of the Netherlands ruled separately after the personal union with the Netherlands ended in 1890, making Adolphe, Grand Duke of Luxembourg, the first independent Grand Duke of Luxembourg.

Grand Ducal Consorts[edit]

See also[edit]


  1. ^ a b c "Constitution de Luxembourg" (PDF) (in French). Service central de législation. Retrieved 2007-07-01. 
  2. ^ "Luxembourg strips monarch of legislative role". The Guardian (London). 12 December 2008. Retrieved 4 May 2010. 
  3. ^ (French)/(German) "Mémorial A, 1907, No. 37" (PDF). Service central de législation. Retrieved 2008-01-14. 
  4. ^ "New Ducal succession rights for Grand Duchy". Luxemburger Wort. 21 June 2011. Retrieved 11 July 2011. 


External links[edit]