When copying data from this family tree, please include a reference to the origin: Ad (A.H.J.) de Kruijff, "Family tree De Kruijff", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-kruijff/I14517.php : accessed June 15, 2024), "Vrouwtje van der Lingen (± 1907-)".
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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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