When copying data from this family tree, please include a reference to the origin: J.L. van Dorsser, "Family tree Hamming/van der Burgh", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-hamming/I29.php : accessed January 12, 2026), "Tonnisje Harms Boontjes (1717-< 1769)".
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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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