When copying data from this family tree, please include a reference to the origin: Erik, "Genealogy Putz Quaadgras Visser Zwart", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-putz-quaadgras-visser-zwart/I2528.php : accessed May 1, 2024), "Johan Christoph van der Maal (± 1844-????)".
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