Hermann von Brandenburg Roman Catholic clergyman (d. 1291) Parents John I, Margrave of Brandenburg Children Siblings Otto IV, Margrave of Brandenburg-Stendal Albrecht von Brandenburg Conrad, Margrave of Brandenburg-Stendal Helene von Brandenburg Agnes of Brandenburg Eric of Brandenburg Mechtild von Brandenburg Henry I, Margrave of Brandenburg-Stendal John II, Margrave of Brandenburg-Stendal