┌─Otto I Margrave of Brandenberg
┌─Albert II Margrave of Brandenberg
│ └─Ada of Holland ⇒
┌─John I Margrave of Brandenberg
┌─Henry I Margrave of Brandenburg-Stendal
│ │ ┌─Albert I Duke of Saxony
│ └─Agnes of Austria
│ ┌─Louis II the Strict Duke of Bavaria