Schwennicke, Detlev, ed., Europaische Stammtafeln: Stammtafeln zur Geschichte der europaischen Staaten, New Series. XII: Schwaben. Marburg: Verlag von J. A. Stargardt, 1992. Information from this source tagged as [Ref: ES XII #[0-9]*].
Sources for birth and parent Information
father:
[Ref: ES XII #108, ES XII #32]
Sources for death Information
date:
(24.IV 1172) [Ref: ES XII #32]
24.IV (1172) [Ref: ES XII #108]
Sources with Information about marriage to Harmann III Count Of Kiburg And Dillingen