When copying data from this family tree, please include a reference to the origin: Willem Vlietstra, "Family tree families Vlietstra, Piebes en aangetrouwde families", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-vlietstra-piebes/I1072294150.php : accessed September 25, 2024), "Gerhardus "Gradus" Nijenhuis".
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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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