Otto IV, Count of Wittelsbach (c. 1083 – 4 August 1156) was a descendant of Count Otto II of Scheyern and Richgard of Weimar-Istrien. Otto entitled himself after Wittelsbach Castle

Burg Wittelsbach

Burg Wittelsbach was a castle near Aichach in today's Bavarian Swabia.The castle was first mentioned around the year 1000. In 1119, Count Otto III of Scheyern moved into the castle of Wittelsbach. The castle's name, "Witilinesbac", is however already mentioned as the place of origin of Otto III...

 near Aichach

Aichach

Aichach is a town in Germany, located in the Bundesland of Bavaria and situated just northeast of Augsburg. It is the capital of the district of Aichach-Friedberg. The municipality of Aichach counts some 20,000 inhabitants. It isn't far from the motorway that connects Munich and Stuttgart, the A8....

 from 1116 onwards, served Henry V, Holy Roman Emperor

Henry V, Holy Roman Emperor

Henry V was King of Germany and Holy Roman Emperor , the fourth and last ruler of the Salian dynasty. Henry's reign coincided with the final phase of the great Investiture Controversy, which had pitted pope against emperor...

 and was Count palatine

Count palatine

Count palatine is a high noble title, used to render several comital styles, in some cases also shortened to Palatine, which can have other meanings as well.-Comes palatinus:...

 of Bavaria

Bavaria

Bavaria, formally the Free State of Bavaria is a state of Germany, located in the southeast of Germany. With an area of , it is the largest state by area, forming almost 20% of the total land area of Germany...

 since 1120.

Otto was married with Heilika of Lengenfeld-Pettendorf, a daughter of Count Friedrich III of Pettendorf-Lengenfeld-Hopfenohe.
Their sons were Otto I

Otto I Wittelsbach, Duke of Bavaria

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.-Biography:Duke Otto I was probably born at...

, the first Wittelsbach

Wittelsbach

The Wittelsbach family is a European royal family and a German dynasty from Bavaria.Members of the family served as Dukes, Electors and Kings of Bavaria , Counts Palatine of the Rhine , Margraves of Brandenburg , Counts of Holland, Hainaut and Zeeland , Elector-Archbishops of Cologne , Dukes of...

 duke of Bavaria

Bavaria

Bavaria, formally the Free State of Bavaria is a state of Germany, located in the southeast of Germany. With an area of , it is the largest state by area, forming almost 20% of the total land area of Germany...

 and Conrad of Wittelsbach

Conrad of Wittelsbach

Conrad of Wittelsbach was the Archbishop of Mainz and Archchancellor of Germany from 20 June 1161 to 1165 and again from 1183 to his death. He was also a cardinal of the Roman Catholic Church....

, archbishop of Mainz and Salzburg.