When copying data from this family tree, please include a reference to the origin: Donald Simmons Jr., "Donald A.C. Simmons Jr. Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/donald-a-c-simmons-jr-family-tree/I132398001368.php : accessed August 5, 2025), "Marguerite de Guines-Coucy (± 1260-1304)".
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