The Diocese of Cumania was de jure a part of the Kingdom of Hungary, and King Andrew II adopted the title of king of Cumania in 1233. There can be no doubt that the king also placed garrisons at key points on the southern slopes of the Carpathian Mountains in northeastern Wallachia. But the military outposts in the region of the bishopric are only first mentioned in relation to the Mongol invasion of 1241 by Roger of Torre Maggiore.