Wegener cites a source dated [1095] which names "Otto filius Ekihardi". The Chronicon Schirense names "Otto et Oudalricus fraters de Schyren" specifying "postea castrum Wittelenspech possederunt". “Domnus Hodalricus advocatus ecclesiæ nostræ” donated property “Imichinhovin...Zimuvafin vel Werda...” to Freising church, with the consent of “fratris sui Ottonis”, by undated charter dated to the late 11th/early 12th century, witnessed by “Otto frater advocati, iterum comes Otto de Sciren, comes Ekkiperht...”.
Graf von Scheyern. Vogt von Fischbachau 1102. Vogt von Freising: “Perchtoldo de Esgilbach” exchanged property with Freising church, in the presence of “Ottonis advocatis et filii sui Ottonis”, by undated charter dated to the early 12th century. Graf von Wittelsbach 1115. Pfalzgraf of Bavaria 1110-1120. Otto Bishop of Freising confirmed an exchange of property, confirmed by “Otto Palatinus comes senior et filius eius Otto”, by undated charter, witnessed by “...Chunrat de Dahhove...Purchart de Moseburch...”. He founded the Abbey of Scheyern [1119].
The necrology of Freising Weihenstephan records the death "XI Kal Sep" of "Otto com".
The primary source which confirms the identity of Otto’s wife has not been identified. It is possible that she was named Kunigunde, as the necrology of Undensdorf records the death "IV Id Jul" of "Chunegunt com". This necrology records almost exclusively members of the Wittelsbach family and this entry cannot be linked to any other known person in the family. 1
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