Schwennicke, Detlev, ed., Europaische Stammtafeln: Stammtafeln zur Geschichte der europaischen Staaten, New Series. VII: Familien des Alten Lotharingien II. Marburg: Verlag von J. A. Stargardt, 1979. Information from this source tagged as [Ref: ES VII #[0-9]*].
Sources for birth and parent Information
parents:
William & dau Adalbert Hr v Saffenberg [Ref: ES VII #165]
Sources for death Information
date:
vor 1300 [Ref: ES VII #165]
Sources with Information about marriage to Mechtild