John the Fearless (1371-1419)
Sep 10 Duke of Burgundy (1404-19), assassinated by adherents of the Dauphin, the future Charles VII of France at 48
- Dec 22 Antipope Pope John XXIII [Baldassare Cossa], Italian Pope (1410-15) who opposed Pope Gregory XII and is considered an antipope by the Catholic Church, dies at 81