When copying data from this family tree, please include a reference to the origin: Jentje de Swart, "Famylje De Swart -- Wijmenga", database, Genealogy Online (https://www.genealogieonline.nl/famylje-de-swart-wijmenga/I45843.php : accessed June 19, 2024), "Friedrich Franz Jahn".
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Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
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