When copying data from this family tree, please include a reference to the origin: Ruud Hilgers, "Genealogy Hilligers (Hillegers, Hilgers, Hellegers, Heiligers etc.), Rotterdam region, Delfshaven, Schiedam", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-hilligers/I296.php : accessed February 5, 2026), "Joannes Maassen".
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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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