When copying data from this family tree, please include a reference to the origin: Kees den Hollander, "Family tree Den Hollander en Van Dueren den Hollander", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-den-hollander-en-van-dueren-den-hollander/I6000000003827435832.php : accessed June 21, 2024), "Johannes Graf von Kleve "Jan van Kleef Teisterbant" Graf von Kleve (????-796)".
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