Check the information Open Archives has about Schleicher.
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The Family tree Van Willigen publication was prepared by Rob van Willigen (contact is not possible).
When copying data from this family tree, please include a reference to the origin: Rob van Willigen, "Family tree Van Willigen", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-willigen/I11047.php : accessed January 14, 2026), "Joseph Bernardus Schleicher (1862-1950)".
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