When copying data from this family tree, please include a reference to the origin: A.F.M.W. Verbrugge, "Genealogy Verbrugge en Eijkemans", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-verbrugge-en-eijkemans/I7844.php : accessed May 15, 2024), "Johannes Berkvens (1840-1922)".
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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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