When copying data from this family tree, please include a reference to the origin: Joke Koster, "Stamboom Griffioen Jellema Friese Adel", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-griffioen-koster/I130038.php : accessed October 2, 2022), "Jan Jacobs (± 1665-????)".
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