When copying data from this family tree, please include a reference to the origin: Annelies Roskam Olgers, "Family tree Roskam - van Rouveroy van Nieuwaal", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-roskam-van-rouveroy-van-nieuwaal/I1518.php : accessed June 8, 2024), "Johannes van der Klaauw".
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