Events

• The completion of the Wyclif Bible and the beginning of prosecution of Lollards in England
• The Battle of Otterburn between England and Scotland
• A Chinese army under Xu Da sacks Karakorum
• A Chinese army under Lan Yu defeats A large Mongolian army under Toghus Temur and captures 100 members of the Yuan royal family

Births

• September 14 - Claudius Claussön Swart, Danish geographer
• September 29 - Thomas of Lancaster, 1st Duke of Clarence, second son of Henry IV of England (d. 1421)
• Juliana Berners, English writer
• Thomas Montacute, 4th Earl of Salisbury (died 1428)
• Dai Jin, Chinese painter (d. 1462)

Deaths

• Simon de Burley, Lord Warden of the Cinque Ports
• James Douglas, 2nd Earl of Douglas
• Thomas Usk, English author

1388

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