When copying data from this family tree, please include a reference to the origin: Yvonne Janssen, "Genealogie Janssen-de Groot", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-janssen-de-groot/I4769.php : accessed May 12, 2024), "Cornelia Jung (± 1776-1949)".
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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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