Otto IV, Count of Scheyern

Otto V, Count of Wittelsbach (c. 1083 – 4 August 1156), also called Otto IV, Count of Scheyern, was the second son of Eckhard I, Count of Scheyern and Richardis of Carniola and Istria.[1] 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.

Otto V, Count of Wittelsbach
Born	c. 1083
Died	(1156-08-04)4 August 1156
Noble family	House of Wittelsbach
Spouse(s)	Heilika of Pettendorf-Lengenfeld
Father	Eckhard I, Count of Scheyern
Mother	Richardis of Carniola

From 1110 to 1111 Otto V was in the First Italian Campaign in the entourage of German King Henry V. During this campaign, King Henry and Count Otto had kidnapped Pope Paschal II in order for the Pope to crown Henry Emperor of the Holy Roman Empire.

When the ancestral seat of the von Scheyern family was relocated to Wittelsbach Castle near Aichach, Otto began calling himself 'Otto V. of Wittelsbach' in 1116. He was thus the namesake for the ruling house of the Wittelsbachers, who ruled Bavaria until 1918.

Since Otto had participated in the capture of Pope Paschal in 1111, he was excommunicated from church, along with Emperor Henry. In order to atone for his sins for kidnapping the earlier Pope, (who was now deceased) Otto founded the Augustinian monastery and church in Indersdorf in 1120, in order for the present Pope, Calixtus II, to remove the excommunication.[2][3]