When copying data from this family tree, please include a reference to the origin: Ludo Mertens, "Family tree Mertens", database, Genealogy Online (https://www.genealogieonline.nl/mertens-stamboom/I4145.php : accessed June 12, 2024), "Luijtgaert Willem Willems van de Kerckhoven (± 1402-????)".
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Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
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