When copying data from this family tree, please include a reference to the origin: M. Neander, "Familie Neander aus Düsseldorf-Unterrath", database, Genealogy Online (https://www.genealogieonline.nl/familie-neander-aus-dusseldorf-unterrath/I10736.php : accessed May 10, 2024), "Clemens Friedrich Maassen (1790-????)".
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