 However, during the thirteenth century the von Kamms relocated to (now a quarter of Passau).The Ortenburg counts, whose own origins lay with the Spanheimer dynasty, were keen to establish their own separate dynastic centre and such the Imperial County of Ortenburg kept its Imperial immediacy until 1806.The Ortenburgs were among the most powerful of the Bavarian nobility, competing in terms of power and position with the Wittelsbach dynasty.