When copying data from this family tree, please include a reference to the origin: Kees Grafhorst, "Family tree Grafhorst - Heijman - van der Pers - de Visser", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-grafhorst/R486.php : accessed June 7, 2024), "Johannes Josephus Trentelman".
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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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