21st August » King Stephen Uroš III Dečanski of Serbia Stephen Uroš III, after months of anarchy, surrenders to his son and rival Stephen Uroš IV Dušan of Serbia Stephen Dušan, who succeeds as Kingdom of Serbia (medieval) King of Serbia.
8th September » Stephen Uroš IV Dušan of Serbia named Stephen Uroš IV Dušan declares himself king of Serbia
27th September » The Battle of Płowce between the Kingdom of Poland of the later Piasts called Kingdom of Poland and the Teutonic Order is fought.