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.
Archduke Franz Josef of Austria, Prince of Tuscany 1958, Archduke Franz Josef inherited the Carlist pretensions to the Spanish throne from them as a nephew of Jaime, Duke of Madrid. He assumed the title of Duke of Madrid and was involved in the Carlist movement, as Francisco I, from 1956 until his death. He died on 9 May 1975 at Hernstein, Austria. Archduke Franz Josef of Austria, Prince of Tuscany Archduke Franz Josef of Austria- Tuscany (born in Vienna 4 February 1905 - died Hernstein, Austria 9 May 1975) was the fourth son of Archduke Leopold Salvator, Prince of Tuscany and Infanta Blanca of Spain. At the fall