When copying data from this family tree, please include a reference to the origin: R.H.C. Tromp, "Family tree Pieter van Woerden en Maria van Stuijvenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-woerden-van-stuijvenberg/I1872.php : accessed June 17, 2024), "Jacobus Petrus Koymans".
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