June 26 » Western Schism: The Roman Catholic Church is led into a double schism as Petros Philargos is crowned Pope Alexander V after the Council of Pisa, joining Pope Gregory XII in Rome and Pope Benedict XII in Avignon.
September 23 » The Battle of Kherlen is the second significant victory over Ming dynasty China by the Mongols since 1368.
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/I132676530376.php : accessed May 12, 2025), "Elizabeth de Burgersh (1342-1409)".
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