When copying data from this family tree, please include a reference to the origin: Annick De Weerdt, "Family tree De Weerdt - De Winter", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-weerdt-de-winter/I12796.php : accessed June 25, 2024), "Berthold van Sweinfeld (± 915-980)".
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