Events

• December 13 - The Order of the Dragon is officially formated under King Sigismund of Hungary.
• Henry, Prince of Wales (later Henry V of England) retakes Aberystwyth from Owen Glendower.
• The Yongle Encyclopedia is completed.

Births

• Karl Knutsson Bonde, later Charles VIII of Sweden and Carl I of Norway (d. 1470)

Deaths

• February 20 - Henry Percy, 1st Earl of Northumberland (b. 1342)
• May 31 - Ashikaga Yoshimitsu, Ashikaga shogun
• December 4 - Valentina Visconti, wife of Louis of Valois, Duke of Orléans
• John VII Palaeologus, Byzantine emperor
• Matheos I of Alexandria, Coptic Pope