When copying data from this family tree, please include a reference to the origin: Jan Nieuwenhuizen, "Family tree Nieuwenhuizen-Van Ginkel en De Kruijf-Grootendorst", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-nieuwenhuizen-van-ginkel-de-kruijf-grootendorst/I506914.php : accessed May 11, 2025), "Jan Teunissen".
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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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