When copying data from this family tree, please include a reference to the origin: MMJ Meijer Ettema, "Family tree Wester / Schoonenberg Beverwijk", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-wester-schoonenberg/I156.php : accessed February 24, 2026), "Cathryn Kersswich Rueffertz ? (± 1570-????)".
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