When copying data from this family tree, please include a reference to the origin: J, de Waal, "Family tree De Waal, De Dordrechtste tak", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-waal-dordse-tak/I8051.php : accessed June 12, 2024), "Willem Lourisz van der Duijn (????-1465)".
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