When copying data from this family tree, please include a reference to the origin: Hans Middendorp, "Family tree Simmers uit Zierikzee en Stavenisse in Zeeland ", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-simmers/I61714.php : accessed May 20, 2024), "Jonas Walvis (1861-1929)".
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