When copying data from this family tree, please include a reference to the origin: Hedwich de Vries, "Family tree Wopke Kooistra en Hiske van Doezum", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-wierd-jans-kooistra/I1422.php : accessed September 23, 2024), "Lutske Willems (????-< 1821)".
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