(Albrecht der Bär), born circa 1100; died Nov. 18, 1170. Became first margrave of Brandenburg in 1150; member of the house of Ascanians.
Upon receiving the lien of the North March from the emperor Lothar III, Albert began his conquest of the lands of the Liutich Slavs. With this aim, he took part in the abortive Crusade of 1147 against the Slavs. In 1150, after the death of Prince Pribyslav of the Havelland, Albert seized Branibor, the chief center of the Havelland. Albert the Bear’s conquests were accompanied by extermination and forced Christianization of the local populace and colonization by settlers from Germany and the Netherlands.