When copying data from this family tree, please include a reference to the origin: Edo Kroef, "Family tree Kroef", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kroef/I231.php : accessed January 20, 2026), "Adolph Heinrich Christian AHN".
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Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
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