Otto IV, Count of Wittelsbach

Otto V, Count of Wittelsbach, also called Otto IV, Count of Scheyern, was the second son of Eckhard I, Count of Scheyern and Richardis of Carniola and Istria. Otto named himself Otto of Wittelsbach, after Wittelsbach Castle near Aichach. He served Henry V, Holy Roman Emperor, in his first Italian Expedition in 1110–1111. Emperor Henry V already addressed him as Otto Count of "Witlinesbac" in a document in 1115. From 1120 onwards, he was Count palatine of Bavaria.