When copying data from this family tree, please include a reference to the origin: Michael Hamilton, "Family Tree Roldan Hamilton", database, Genealogy Online (https://www.genealogieonline.nl/family-tree-roldan-hamilton/P743.php : accessed May 2, 2024), "DREUX (Drogo) de Mantes Comte du Vexin et d'Amiens (990-1035)".
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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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