Emmanuel Ignatius of Nassau-Siegen

Despite this provision, after the death of John Francis Desideratus on 17 December 1699, Emmanuel Ignatius (who inherited the Barony de Renaix with his older brothers) and his surviving full-siblings assumed the title, name and arms of Nassau-Siegen.

Despite this, Emmanuel Ignatius and his siblings all used the title of Prince or Princess of Nassau, Count or Countess of Katzenelnbogen, Vianden and Diez, Baron or Baroness of Beilstein and Ronse.

However, his power was significantly restricted because the real government was in the hands of the Electorate of Cologne; soon after, he returned to Brussels without further attempts to exercise authority in the principality.

[5] The hoped for Catholic succession in Nassau-Siegen after the death of Prince Frederick William II in 1734 never took place, because both Emmanuel Ignatius and his brother Francis Hugo died shortly after and within months of each other in 1735.

[1] Despite his posthumous, formal recognition by French courts (sentence du Chatelet, 31 January 1756), he was declared illegitimate in the Holy Roman Empire, within whose boundaries Nassau-Siegen was located, at the request of William IV, Prince of Orange by the Reichshofrat on 17 December 1744, that decision being confirmed by the Emperor on 15 October 1745.