When copying data from this family tree, please include a reference to the origin: Gijsbertus Cornelis (Bert) Severijn, "Family tree Severijn", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-severijn/I16879.php : accessed February 19, 2026), "Gerrit Kooiman (± 1763-> 1812)".
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