When copying data from this family tree, please include a reference to the origin: P. den Os, "Family tree Den Os open eindjes 2015", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-den-os-open-eindjes/I25277591.php : accessed June 9, 2024), "Jan van Leeuwen (± 1769-????)".
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