 After the Silesian Duke Henry II the Pious had died at the 1241 Battle of Legnica, his son Bolesław II the Bald in 1248 finally lost the Lubusz Land to the Magdeburg archbishopric and the Ascanian margraves of Brandenburg, who began to attach the territories east of the Oder to their possessions as the Neumark ("New March") region.While the Ascanians and the Wettin archbishops competed to win influence, the diocese itself remained subordinate to Gniezno and the Lebus bishops maintained the interests of the Polish Piast rulers.In view of the pressure exerted by Brandenburg, the bishops in 1276 moved the episcopal seat to Göritz (Górzyca) east of the Oder.