When copying data from this family tree, please include a reference to the origin: Pieter C. Bismeijer, "Bißmeyer-Bissmeyer-Bismeyer-Bismeijer Family", database, Genealogy Online (https://www.genealogieonline.nl/bismeijer-family/I67861.php : accessed May 8, 2024), "Arnulf III de Boulogne, Comte de Boulogne (????-990)".
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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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