Franz Joseph I of Austria
Franz Joseph I or Francis Joseph I (Franz Joseph Karl; 18 August 1830 – 21 November 1916) was Emperor of Austria, King of Hungary, and monarch of many other states of the Austro-Hungarian Empire, from 2 December 1848 to his death. From 1 May 1850 to 24 August 1866 he was also President of the German Confederation. He was the longest-reigning Emperor of Austria and King of Hungary, as well as the third-longest-reigning monarch of any country in European history, after Louis XIV of France and Johann II of Liechtenstein.
Austria-Este
Although the first heir, Archduke Franz Ferdinand (1863-1914), was not a descendant of the last Este duchess, Mary Beatrice of Modena), he took the name Austria-Este. In 1896 he became the heir presumptive of the Austrian Empire and, according to the terms of the secundogeniture, could not combine the Austria-Este inheritance with that of the main line of the House of Habsburg (i.e., the Austro-Hungarian Empire, but he was assassinated 28 June 1914 in Sarajevo before becoming emperor. Because Franz Ferdinand's children were born in morganatic marriage (see House of Hohenberg), on 16 April 1917 Emperor Charles I of Austria, as head of the House of Habsburg, issued letters patent conferring the name, arms and patrimony of Austria-Este on his son, Archduke Robert, and his future issue according to masculine primogeniture. Through his mother Zita of Bourbon-Parma, Robert happened to be a descendant of Duke Ercole III of Modena as well, and thus the blood of the last Este dukes was joined with the name Austria-Este.