When copying data from this family tree, please include a reference to the origin: Jason van Beurden, "Genealogische verzameling Van Beurden x Swanenberg - Van Vliet x Bakkers", database, Genealogy Online (https://www.genealogieonline.nl/genealogische-verzameling-van-beurden/I81048.php : accessed May 6, 2024), "Jan Klaasse van der Speck (????-< 1750)".
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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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