When copying data from this family tree, please include a reference to the origin: Coos van Spijk, "Family tree of Spijk and her many ancestors", database, Genealogy Online (https://www.genealogieonline.nl/van-spijk-stamboom/I66985.php : accessed January 31, 2026), "Pieter Krijgsman . stamvader van de familie Krijgsman Alblasserwaard (± 1570-????)".
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