In 1134, in the wake of a German crusade against the Wends, the German magnate, Albert the Bear, was granted the Northern March by the Emperor Lothar III. He formally inherited the town of Brandenburg and the lands of the Hevelli from their last Wendish ruler, Pribislav, in 1150. After crushing a force of Sprevane who occupied the town of Brandenburg in the 1150s, Albert proclaimed himself ruler of the new Margraviate of Brandenburg. Albert, and his descendants the Ascanians, then made considerable progress in conquering, colonizing, Christianizing, and cultivating lands as far east as the Oder. Within this region, Slavic and German residents intermarried. During the 13th century, the Ascanians began acquiring and seizing territory around and east of the Oder from Poland (Lubusz Land and north-western Greater Poland), later known as the Neumark, in contrast to the Altmark, the cradle of the March of Brandenburg.
in 1134 in the wake of a german crusade against the wends the german magnate albert the bear was granted the northern march by the emperor lothar iii he formally inherited the town of brandenburg and the lands of the hevelli from their last wendish ruler pribislav in 1150 after crushing a force of sprevane who occupied the town of brandenburg in the 1150s albert proclaimed himself ruler of the new margraviate of brandenburg albert and his descendants the ascanians then made considerable progress in conquering colonizing christianizing and cultivating lands as far east as the oder within this region slavic and german residents intermarried during the 13th century the ascanians began acquiring and seizing territory around and east of the oder from poland (lubusz land and north-western greater poland) later known as the neumark in contrast to the altmark the cradle of the march of brandenburg