June 21 – Upon the death of Erik Magnusson, his claims to the Swedish throne die with him, and power is restored undivided to his father, King Magnus.[2] With this unexpected death of Erik Magnusson, a previous promise to give Helsingborg to Denmark was reneged on by Magnus IV Eriksson.[3] But Valdemar IV Atterdag was far too ambitious a ruler to have his plan to reassemble the Danish kingdom fall into pieces, and so he proceeded to invade Scania the next year with his mercenary army.[3]
probable date – Battle of Megara: A Christian coalition defeats a Turkish raider fleet.[6][7]
earliest possible date – Bogdan I becomes Prince of Moldavia (modern-day Moldova) after freeing it from Hungarian control. He will be ancestor of the House of Bogdan, who will rule Moldavia for more than three centuries.[8]
^ Rendina, Claudio (1994). I capitani di ventura. Rome: Newton Compton.
^ Adam J. Kosto (3 May 2001). Making Agreements in Medieval Catalonia: Power, Order, and the Written Word, 1000-1200. Cambridge University Press. ISBN 978-0-521-79239-4. Retrieved 19 June 2021.
^ Luttrell, Anthony (1975). "The Hospitallers at Rhodes, 1306–1421". In Setton, Kenneth M.; Hazard, Harry W. (eds.). A History of the Crusades, Volume III: The Fourteenth and Fifteenth Centuries. Madison and London: University of Wisconsin Press. pp. 278–313. ISBN 0-299-06670-3.
^Topping, Peter (1975). "The Morea, 1311–1364". In Setton, Kenneth M.; Hazard, Harry W. (eds.). A History of the Crusades, Volume III: The Fourteenth and Fifteenth Centuries. Madison and London: University of Wisconsin Press. pp. 104–140. ISBN 0-299-06670-3.