The Genealogy Van den Berg-Van Doorn publication was prepared by wijlen GWB van den Berg (at the request of the family this publication remains available, contact is not possible).
When copying data from this family tree, please include a reference to the origin: wijlen GWB van den Berg, "Genealogy Van den Berg-Van Doorn", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-van-den-berg-van-doorn/I8878.php : accessed June 9, 2024), "Jan Klaassen (van den Spijker)".
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