Jan 10 In the year 1276 gregorius X, [Tedaldo Visconti], pope, dies
Jun 22 Innocent V, [Pierre the Tarantaise], Pope (1276), dies at about 36 in the year 1276.
Jul 27 King James I of Aragon (b. 1208) died in the year 1276.
Aug 18 In the year 1276 adrian V, [Ottobono Fieschi], Italian Pope (7/11-8/18/1276), dies
Sep 06 In the year 1276 death of vicedomino de Vicedominis, Cardinal-Bishop of Palestrina and dean of the Sacred College of Cardinals (b. ca. 1215)