Duchess Elisabeth of Bavaria ( December 24 , 1837 - September 10 , 1898 ) was the wife of Emperor Franz Joseph I of Austria . Elisabeth of Bavaria ( 24 December 1837 â `` 10 September 1898 ) was Empress of Austria and Queen consort of Hungary as the spouse of Franz Joseph I. As such , she held also the titles Queen consort of Bohemia , Queen consort of Croatia and others .