When copying data from this family tree, please include a reference to the origin: Marcel van der Sluis, "Ancestors Van der Sluis en De Oude", database, Genealogy Online (https://www.genealogieonline.nl/kwartierstaat-van-der-sluis-en-de-oude/I6588.php : accessed May 7, 2024), "Rudolf IV van Vexin (????-1074)".
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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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