Check the information Open Archives has about Van Praag.
Check the Wie (onder)zoekt wie? register to see who is (re)searching Van Praag.
The Spier wereldwijd onderzoek publication was prepared by Jan Nienhuis (contact is not possible).
When copying data from this family tree, please include a reference to the origin: Jan Nienhuis, "Spier wereldwijd onderzoek", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-spier/I534.php : accessed February 18, 2026), "Grietje Marcus van Praag".
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