When copying data from this family tree, please include a reference to the origin: Arno Terheerd, "Family tree Terheerd - Buurman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-terheerd-buurman/I505618.php : accessed June 4, 2024), "Heinrich van Saksen Ludolf I (de Vogelaar) (????-936)".
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