Line of succession to the throne of Luxembourg

Since 2011, the crown of Luxembourg descends according to absolute primogeniture among Grand Duke Henri's descendants and according to agnatic primogeniture among other dynasts.

The constitution of Luxemburg states that the crown is hereditary in the house of Nassau according to the pact of 1783 (the Nassau Family Pact), the Treaty of Vienna made in 1815, and the Treaty of London of 1867.

In April 1907 Grand Duke William IV decreed (approved in July 1907 by legislature of Luxembourg and thereafter enacted) amendments to the House law of Nassau: the Grand Duke's eldest daughter would succeed (that provision is identical with the effect of the 1783 pact), and after her, her issue in male line born of marriages that abide by the house laws; in default thereof, the Grand Duke's next daughters in similar fashion. Thus, issue of the Grand Duke's daughters received succession rights only in strict agnatic line - a male-line male descendant of a younger daughter would have had preference over female descendants of elder daughters. This law of succession in Luxembourg followed a special order among male lines issued from Grand Duke William IV's daughters.

The 1907 amendments to the house law bypassed the Counts of Merenberg, male-line descendants of the House of Nassau. While the Merenberg line had a male heir in the person of Georg Nikolaus, Count von Merenberg (1871-1948), the count was born of a morganatic marriage between Grand Duke William IV's younger brother, Prince Nikolaus Wilhelm of Nassau, and Natalia Pushkina (daughter of Russian author Alexander Pushkin, a member of the untitled Russian nobility). The count's claim to be recognized as the heir to the Grand Duchy was dismissed on the grounds that he and his branch were non-dynastic despite his marriage to Princess Olga Alexandrovna Yurievskaya, a morganatic daughter of Tsar Alexander II of Russia. The Merenberg line eventually also ran out of male heirs; the last surviving male-line descendant is Countess Clotilde von Merenberg, third cousin once removed of Grand Duke Henri.

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