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/I247.php : accessed February 7, 2026), "Johannes Bernardus Jansen".
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