26th January » King Edward III of England is declared King of France.
1st April » Niels Ebbesen kills Gerhard III of Holstein in his bedroom, ending the 1332-1340 'interregnum' in Denmark.
30th October » Kingdom of Portugal Portuguese and Kingdom of Castile Castilian forces halt a Marinid dynasty Marinid invasion at the Battle of Río Salado.
Famous Birthdays in 1340
6th March » John of Gaunt, 1st Duke of Lancaster, Belgian-English son of Edward III of England (d. 1399)