When copying data from this family tree, please include a reference to the origin: Nico van Gogh, "Family tree Dörr", database, Genealogy Online (https://www.genealogieonline.nl/dorr-stamboom/I472.php : accessed January 19, 2026), "Frederika Johanna Spermon".
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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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