Otto von Hapsburg (November 20, 1912 – July 4, 2011)

His Imperial and Royal Highness Crown Prince Otto of Austria, Hungary, Croatia and Bohemia, Grand Master of the Order of the Golden Fleece (Austria), sometime titular Emperor of Austria, King of Hungary, Croatia and Bohemia (20 Nov 1912 – 4 July 2011)

Hat tip to Rafal Heydel-Mankoo.