When copying data from this family tree, please include a reference to the origin: Daniel van der Ploeg, "voorouders van der Ploeg-Mosterman", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-van-der-ploeg-mosterman/I29770.php : accessed June 14, 2024), "Willem III van Teylingen (????-1283)".
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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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