When copying data from this family tree, please include a reference to the origin: Tijs van den Brink, "Pedigree of Marinus van Malenstein", database, Genealogy Online (https://www.genealogieonline.nl/marinus-van-malenstein/I1977.php : accessed February 14, 2026), "Jan Harmsen (1666-????)".
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Please stick to the following rules
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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