When copying data from this family tree, please include a reference to the origin: Janet McDonald, "Krziyzek, Niluschewski Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/krziyzek-niluschewski-family-tree/P1390.php : accessed May 9, 2024), "Friedrich Franz Erich Blumenthal (1883-????)".
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