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The Family tree Ridderikhoff publication was prepared by J. Ridderikhoff (contact is not possible).
When copying data from this family tree, please include a reference to the origin: J. Ridderikhoff, "Family tree Ridderikhoff", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ridderikhoff/I819.php : accessed September 23, 2024), "Frederich Katz".
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