 Duke in Bavaria

Duke in Bavaria () was a title used among others since 1506, when primogeniture was established, by all members of the House of Wittelsbach, with the exception of the Duke "of" Bavaria which began to be a unique position.So reads for instance the full title of Karl I, Count Palatine of Zweibrücken-Birkenfeld and patriarch of the House of Palatinate-Birkenfeld