Schwennicke, Detlev, ed., Europaische Stammtafeln: Stammtafeln zur Geschichte der europaischen Staaten, New Series. XIX: Zwischen Weser und Oder. Frankfurt am Main: Vittorio Klostermann, 2000. Information from this source tagged as [Ref: ES XIX #[0-9]*].
Sources for birth and parent Information
parents:
[Ref: ES XIX #82]
Sources for death Information
date:
nach 20.XI 1161 [Ref: ES XIX #82]
Sources with Information about marriage to unknown
child:
[Ref: ES XIX #82]
Research Notes:
Count of Querfurt, Bggf of Magdeburg [Ref: ES XIX #82]