Otto I Wittelsbach, Duke of Bavaria (born 1117)

Otto I, Duke of Bavaria

Duke of Bavaria from 1180 (1117–1183)

Otto I, called the Redhead, was Duke of Bavaria from 1180 until his death. He was the first Bavarian ruler from the House of Wittelsbach, a dynasty which reigned until the abdication of King Ludwig III of Bavaria in the German Revolution of 1918.