Otto III, Margrave of Brandenburg Margrave of Brandenburg (1215–1267) Parents Matilda Von Groitzsch Albert II, Margrave of Brandenburg Children Otto V, Margrave of Brandenburg-Salzwedel John III, Margrave of Brandenburg-Salzwedel Matilda of Brandenburg Kunigunde of Brandenburg, Duchess of Slavonia Albert III, Margrave of Brandenburg-Salzwedel Otto VI, Margrave of Brandenburg-Salzwedel Siblings John I, Margrave of Brandenburg Elisabeth of Brandenburg, Landgravine of Thuringia Matilda of Brandenburg, Duchess of Brunswick-Lüneburg Jutta von Brandenburg Partners Beatrice of Bohemia
