Check the information Open Archives has about Van den Bol.
Check the Wie (onder)zoekt wie? register to see who is (re)searching Van den Bol.
The Family tree Wallenburg publication was prepared by W. Wallenburg (contact is not possible).
When copying data from this family tree, please include a reference to the origin: W. Wallenburg, "Family tree Wallenburg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-wallenburg/I71.php : accessed January 23, 2026), "Geertruij van den Bol".
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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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