When copying data from this family tree, please include a reference to the origin: Joke Koster, "Family tree Griffioen Jellema Friese Adel", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-griffioen-koster/I121104.php : accessed April 19, 2024), "Willem Hylckes Hoogeveen (± 1600-????)".
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