Check the information Open Archives has about Ruyrdts.
Check the Wie (onder)zoekt wie? register to see who is (re)searching Ruyrdts.
The Family tree Cuperus en Holterman publication was prepared by wijlen P. Cuperus (at the request of the family this publication remains available, contact is not possible).
When copying data from this family tree, please include a reference to the origin: wijlen P. Cuperus, "Family tree Cuperus en Holterman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-cuperus-holterman/I1366.php : accessed May 16, 2024), "Nies Ruyrdts (????-< 1624)".
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