Sophie of Winzenburg First Margravine of Brandenburg (1105–1160) Parents Hedwig von Krain und Istrien Herman I, Count of Winzenburg Children Gertrude of Brandenburg Bernhard, Count of Anhalt Hedwig of Brandenburg Herman I, Count of Weimar-Orlamünde Adelheid von Brandenburg Adalbert III von Ballenstedt Siegfried, Prince-Archbishop of Bremen Otto I Heinrich von Brandenburg Dietrich von Brandenburg Siblings Beatrix II of Winzenburg Herman II, Count of Winzenburg Mathilde of Winzenburg Partners Albert the Bear