Archduke Leopold Johann of Austria

Archduke Leopold Johann of Austria, 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 who ruled the Habsburg domains until their dethronement following World War I in 1918.