- Sep 11 Chinese general Chih-Chung assassinates Emperor Wei Shao Wang (former Prince of Wei) in Peking and proclaims himself Regent
- Sep 12 Battle at Muret: Crusade of Simon de Montfort beat Pedro II of Aragon
- Oct 13 Battle of Steppes: Hugh Pierrepont, Bishop of Liège & Louis II, Count of Loon defeat Henry I, Duke of Brabant