Check the information Open Archives has about Van Londen.
Check the Wie (onder)zoekt wie? register to see who is (re)searching Van Londen.
The Family tree De Groot De Haas publication was prepared by H.N. de Groot (contact is not possible).
When copying data from this family tree, please include a reference to the origin: H.N. de Groot, "Family tree De Groot De Haas", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-groot-de-haas/I96.php : accessed June 19, 2024), "Johannes Dominicus van Londen (1719-????)".
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