Otto (died 26 June 1057) was an illegitimate son of Bernard, Margrave of the Nordmark, and a

Slav Slavs are the largest European ethnolinguistic group. They speak the various Slavic languages, belonging to the larger Balto-Slavic branch of the Indo-European languages. Slavs are geographically distributed throughout northern Eurasia, main ...

mistress whose name is unknown. He took the title ''march'' and claimed the Northern March following the death in battle of his half-brother

William William is a male given name of Germanic origin.Hanks, Hardcastle and Hodges, ''Oxford Dictionary of First Names'', Oxford University Press, 2nd edition, , p. 276. It became very popular in the English language after the Norman conquest of Engl ...

on 10 September 1056. However, he was opposed by Lothair Udo I and killed in battle near Hausneindorf the next summer.

Sources

*Medieval Lands Project
Nobility of Brandenburg.
Margraves of the Nordmark 1057 deaths Year of birth unknown {{Germany-margrave-stub