When copying data from this family tree, please include a reference to the origin: Ger de Vries, "Family tree I.D.M. de Vries", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-i-m-d-de-vries/I1254.php : accessed May 13, 2024), "Johan van Arkel (± 830-856)".
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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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