May 1403 in history

May 1403 events chronologically

May 21 Henry III of Castile sends Ruy Gonzáles de Clavijo as ambassador to Timur to discuss the possibility of an alliance between Timur and Castile against the Ottoman Empire

Died in May 1403

May 10 Katherine Swynford the third wife of John of Gaunt, Duke of Lancaster, a son of King Edward III. She had been the Duke's lover for many years before their marriage. The couple's children, born before the marriage, were later legitimated during the reign of the Duke's nephew, Richard II, although with the provision that not they nor their descendants could ever claim the throne of England