When copying data from this family tree, please include a reference to the origin: Jan De Backer, "Family tree De Backer - Evers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-backer-evers/I540170.php : accessed February 18, 2026), "Ricardis van Scheyern Wittelsbach (± 1150-1231)".
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