Family tree Helmantel » Sources » Geneanet (André-Frédéric Hagemann); Zentrales Verzeichnis Digitalisierte Drucke; http://www.ub.uni-koeln.de/cdm/ref/collection/totenzettel/id/3871; "Geschichte der Burgen, Rittergüter, Abteien und Klöster in den Rheinlanden ..." van Friedrich E. Freiherr von Mering en Ernst Weyden
Source description
Geneanet (André-Frédéric Hagemann); Zentrales Verzeichnis Digitalisierte Drucke; http://www.ub.uni-koeln.de/cdm/ref/collection/totenzettel/id/3871; "Geschichte der Burgen, Rittergüter, Abteien und Klöster in den Rheinlanden ..." van Friedrich E. Freiherr von Mering en Ernst Weyden
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