Duke of Urach
Notwithstanding the above, Lithuania was a kingdom under Mindaugas, who was crowned by the authority of Pope Innocent IV in 1253. Vytenis, Gediminas and Vytautas the Great also assumed the title of King, although uncrowned by the Pope. A failed attempt was made in 1918 to revive the Kingdom under a German Prince, Wilhelm Karl, Duke of Urach, who would have reigned as Mindaugas II of Lithuania.