Archduke Leopold Johann of Austria

Archduke Leopold Johann of Austria (13 April 1716 – 4 November 1716), was the last-born male descendant from the House of Habsburg. The only son and long-hoped heir of Charles VI, Holy Roman Emperor, with his and his father's death in 1740, the Habsburg male line died out completely, being succeeded by the House of Habsburg-Lorraine (originated by the marriage of Leopold Johann's sister Maria Theresa and Francis III Stephen, Duke of Lorraine) who ruled the Habsburg domains until their dethronement following World War I in 1918.