When copying data from this family tree, please include a reference to the origin: Tine Hoffmann & Berndt Westermann (contact R.Westermann), "Genealogy Westermann (Vestermann, Vestermand) 1665 – 2006", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-westermann/I562.php : accessed March 17, 2026), "Johannes Frederikus Theodorus van Teylingen".
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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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