When copying data from this family tree, please include a reference to the origin: Jan dolphijn, "Family tree Dolphijn", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-dolphijn/I784.php : accessed February 4, 2026), "Maria KELDERMAN".
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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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