Otto von Habsburg
Otto von Habsburg (given names: Franz Joseph Otto Robert Maria Anton Karl Max Heinrich Sixtus Xaver Felix Renatus Ludwig Gaetan Pius Ignatius, ; 20 November 1912 4 July 2011), was the last Crown Prince of the Austro-Hungarian Empire. His father, Charles, was the Emperor of Austria and the King of Hungary. The murder of his great uncle, Archduke Franz Ferdinand of Austria was the event that led to the start of World War I. His family fled Austria in 1919 after the war.