When copying data from this family tree, please include a reference to the origin: Lucas van Heeren, "Genealogy Blussé uit Dordrecht", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-blusse-uit-dordrecht/I1466.php : accessed June 3, 2024), "Berhard (Berhard II) Billung (± 995-1059)".
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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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