Otto II of Brandenburg

Otto II (after 1147–1205), called the Generous, was the third Margrave of Brandenburg, succeeding his father Otto I in 1184. He strengthened its settlement and defences and campaigned against the Slavs and King Canute VI of Denmark, ravaging Danish-held Pomerania in the winter of 1198–1199.

From 1200 he backed the Hohenstaufen Philip of Swabia against Otto IV. His marriage to his stepmother Ada of Holland was childless, so his half-brother Albert II succeeded him in 1205.