When copying data from this family tree, please include a reference to the origin: Kees Willems, "Family tree Willems Hoogeloon-Best", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-willems-hoogeloon-best/I64881.php : accessed August 5, 2025), "Robert I Comte d'Alencon de PONTHIEU (????-± 1217)".
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