When copying data from this family tree, please include a reference to the origin: Jaap van der Werff, "Family tree Van der Werff / Kooistra", database, Genealogy Online (https://www.genealogieonline.nl/van-der-werff-stamboom/I524654.php : accessed June 10, 2024), "Godfried van Breda en Schoten II (± 1161-1217)".
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