When copying data from this family tree, please include a reference to the origin: Klaas Pera, "Family tree Helmantel", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-helmantel/I5589.php : accessed September 23, 2024), "Johanna Dorothea (Jeanne Dorothée) Frédéric (Friedrich?) (????-1813)".
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