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