Schwennicke, Detlev, ed., Europaische Stammtafeln: Stammtafeln zur Geschichte der europaischen Staaten, New Series. XVII: Hessen und das Stammesherzogtum Sachsen. Frankfurt am Main: Vittorio Klostermann, 1998. Information from this source tagged as [Ref: ES XVII #[0-9]*].
Sources for birth and parent Information
parents:
Gerlach of Isenburg & ___ of Leiningen [Ref: ES XVII #59]
Sources for death Information
date:
vor 1227 [Ref: ES XVII #59]
Sources with Information about marriage to Irmengard