When copying data from this family tree, please include a reference to the origin: Roeli de Vos, "Family tree Van der Knaap Rozenburg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-der-knaap-rozenburg/I3939.php : accessed June 6, 2024), "Jan van Oudheusden (< 1866-????)".
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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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