When copying data from this family tree, please include a reference to the origin: Leen Couprie, "Family tree Couprie, Heijer, Bontenbal, Boersma", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-couprie-heijer-bontenbal-boersma/I186.php : accessed May 31, 2024), "Jacob d'roos".
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