May 01 On this day in history stefanus IV Uros I de Great, King of Serbia (1243-76), dies
May 20 John XXI, [Petrus Juliani/Hispanus], Port Pope (1276-77), dies in the year 1277.
Jul 01 Baibars, Mameluk sultan of Egypt (b. 1223) died in the year 1277.
Important Dates And Events In History - Hisdates.Com