When copying data from this family tree, please include a reference to the origin: Sam Stamboom, "Family tree Veenstra, Dijkstra, Peperkamp and Van den Dobbelsteen", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-boris-bas/I21141.php : accessed March 6, 2026), "Theodorus Jacobus Derksen".
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