When copying data from this family tree, please include a reference to the origin: Karen M Hughes, "More like a forest than a tree!", database, Genealogy Online (https://www.genealogieonline.nl/karens-family-tree/I220310.php : accessed June 21, 2024), "Jan Grotenbach van VALKENBURG (< 1516-1575)".
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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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