When copying data from this family tree, please include a reference to the origin: Jaco Oversluizen, "Family tree Oversluizen(Lanser)-van der Beek - de Waard-van den Hoek", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-oversluizen/I16628.php : accessed February 9, 2026), "Pfalzgraf Of Swabia Frederick (± 962-????)".
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