Who was the nephew of Emperor Franz Joseph of Austria and heir to the throne, who renounced his childrens right to succession in order to make a morganatic marriage with Countess Sophie Chotek and was assassinated with her in Bosnia in 1914?
Emperor of Austria in 1875. As Ferdinand I had no sons, his brother Francis Charles would have become emperor, but was persuaded by his wife to pass over the right of succession to their son, Francis Joseph. He accepted the duty of the Emperor of Austria without having been Crown Prince or "Thronfolger" before. Francis Joseph's only son Rudolf committed suicide in 1889, Francis Joseph's brother Karl Ludwig died in 1896. Karl Ludwig's son Franz Ferdinand became heir presumptive to the throne. He was assassinated in Sarajevo, Bosnia in 1914; due to his morganatic marriage, his son had no rights to the throne.
Line of succession to the former Austro-Hungarian throne head of the house Crown Prince Otto recognized the title Count or Countess von Habsburg to the issue of morganatic marriages contracted after the dynasty ceased to reign. The descendants of archdukes whose wives had been of comital rank were retroactively integrated into the dynasty with traditional titles of Counts of Habsburg (e.g., the children and male-line descendants of Archduke Leo Karl {1893-1939} and his wife since 1922, Countess Maria-Klothilde von Thuillières von Montjoye-Vaufrey et de la Roche {1893-1978}), except those of Archduke Clemens Salvatore of Austria-Tuscany (1904-1974) who, on 2 April 1930, had renounced his Tuscan succession rights and