When copying data from this family tree, please include a reference to the origin: P. W. van Maaren, "Family tree van Peter Barten landbouwer te Maarn (Maarn 1)", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-peter-barten/I167.php : accessed January 10, 2026), "Celia Roskam".
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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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