When copying data from this family tree, please include a reference to the origin: Martin Brederoo, "Genealogy Brederoo", database, Genealogy Online (https://www.genealogieonline.nl/test-brederoo/I76446.php : accessed January 21, 2026), "Willem III van Nevers (± 1107-1161)".
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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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