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 death in infancy and his father's death in 1740, the Habsburg male line died out completely. It was succeeded by the House of Habsburg-Lorraine (originated by the marriage of Leopold Johann's younger sister Maria Theresa and Francis III Stephen, Duke of Lorraine) who ruled the Habsburg domains until their dethronement following World War I in 1918.