When copying data from this family tree, please include a reference to the origin: Sjoerd Willems, "Family tree Willems - Van den Heuvel", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-willems-van-den-heuvel/I02387.php : accessed June 14, 2024), "Graaf Dreux d'Amiens (????-1035)".
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