Schwennicke, Detlev, ed., Europaische Stammtafeln: Stammtafeln zur Geschichte der europaischen Staaten, New Series. VIII: West-, Mittel- und Nordeuropaische Familien. Marburg: Verlag von J. A. Stargardt, 1980. Information from this source tagged as [Ref: ES VIII #[0-9]*].
Sources for birth and parent Information
parents:
[Ref: ES VIII #37]
Sources for death Information
date:
occ 1217 [Ref: ES VIII #38]
Sources with Information about marriage to Irmgarde