Events

• Petrarch becomes famous
• Beginning of the Breton War of Succession over the control of the Duchy of Brittany
• Margarete Maultasch, Countess of Tyrol, expells her husband John Henry of Bohemia , to whom she had been married as a child. She subsequently marries Louis of Bavaria without having been divorced, which results in the excommunication of the couple.

Births

• 5 June - Edmund of Langley (son of King Edward III of England)

Deaths

• Leo V, king of Armenia (murdered)
• April 30 - John III of Dreux, Duke of Brittany
• June 15 - Byzantine Emperor Andronicus III