Willem Wermboutsz. zegelde in 1455 met het wapen van Van Raephorst, een zijtak van de Van Wassenaers. Philips I van Wassenaer had een broer Dirk van Raephorst en van deze tak stamde Willem Wermboutsz. af.
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/I736303.php : accessed May 12, 2024), "Willem Wermboutsz".
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