Otto I Margrave of Brandenburg from 1170 to 1184 (1128–1184) Parents Sophie of Winzenburg Albert the Bear Children Heinrich von Gardelegen Otto II, Margrave of Brandenburg Albert II, Margrave of Brandenburg Siblings Bernhard, Count of Anhalt Gertrude of Brandenburg Herman I, Count of Weimar-Orlamünde Hedwig of Brandenburg Adalbert III von Ballenstedt Siegfried, Prince-Archbishop of Bremen Heinrich von Brandenburg Adelheid von Brandenburg Dietrich von Brandenburg Partners Judith of Poland Adelheid
