When copying data from this family tree, please include a reference to the origin: B.H.J. Kathmann, "Family tree Kathmann / Kathman, Allard, de Mutsert", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kathmann-kathman-allard-de-mutsert/I13805.php : accessed September 25, 2024), "Willem van der Weert".
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