Events

• June 14 - Owain Glyndŵr of Wales allies with the French against the English and Henry Bolingbroke. Later he gains control of his country, declares himself Prince of Wales, and holds a parliament.
• Founding of the University of Turin.

Births

• February 9 - Constantine XI, last Byzantine Emperor (died 1453)
• February 14 - Leone Battista Alberti, Italian painter, poet, and philosopher (died 1472)
• March 25 (baptism) - John Beaufort, 1st Duke of Somerset, English military leader (d. 1444)
• July 25 - Philip I, Duke of Brabant (d. 1430)
• Marie d'Anjou, queen of Charles VII of France (died 1463)
• Murad II, Ottoman Sultan (died 1451)
• Gilles de Rais, French aristocrat (died 1440)
• Yamana Souzen, Japanese warlord and monk (died 1473)

Deaths

• April 27 - Philip II, Duke of Burgundy (born 1342)
• September 14 - Duke Albert IV of Austria (born 1377)
• September 27 - William of Wykeham, English bishop and statesman (born 1320)
• October 1 - Pope Boniface IX (born 1356)
• December 13 - Albert, Count of Holland (b. 1336)
• Eleanor of Arborea, ruler of Sardinia (born 1350)

1404

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