Feb 08 Hulagu Khan, Mongol ruler (b. 1217) died in the year 1265.
Apr 25 Roger de Quincy, 2nd Earl of Winchester, English crusader died on this day in history.
May 16 In the year 1265 death of saint Simon Stock, English saint (b. 1165)
Aug 04 In the year 1265 simon de Montfort, English earl of Leicester, dies in battle
Dec 03 In the year 1265 death of odofredus, Italian jurist