* Pope Adrian V ( c. 1205 – 1276 )

* 1208 – King James I of Aragon ( d. 1276 )

* 1276 – While taking exile in Fuzhou in southern China, away from the advancing Mongol invaders, the remnants of the Song Dynasty court hold the coronation ceremony for the young prince Zhao Shi, making him Emperor Duanzong of Song.

* King James I of Aragon ( 1208 – 1276 )

* 1276 – Magnus Ladulås is crowned King of Sweden in Uppsala Cathedral.

* 1322 – Humphrey de Bohun, 4th Earl of Hereford, English soldier ( b. 1276 )

* 1276 – Augsburg becomes an Imperial Free City.

* 1276 – Margaret of Brabant, Queen of Germany ( d. 1311 )

* 1276 – Prince Hisaaki, Japanese shogun ( d. 1328 )

Before this antipope, the most recent popes called John were John XXII ( 1316 – 1334 ) and John XXI ( 1276 – 1277 ).

Pope Adrian V ( c. 1210 / 20 – 18 August 1276 ), born Ottobuono de ' Fieschi, was Pope for a short time during the year 1276.

Pope John XXI, born Pedro Julião ( Latin, Petrus Iulianus ( c. 1215 – 20 May 1277 ), a Portuguese often identified with Pedro Hispano ( Latin, Petrus Hispanus ; English, Peter of Spain ), was Pope from 1276 until his death about eight months later.

1210 – 10 January 1276 ), born Tedaldo Visconti, was Pope from 1271 to 1276.

The Blessed Pope Innocent V ( c. 1225 – 22 June 1276 ), born Pierre de Tarentaise, was Pope from 21 January 1276 until his death.

There have been other Popes who were suspected of sorcery, for example John XXI ( 1276 – 77 ) and Benedict XII ( 1334 – 42 ).

* March 16 – Humphrey de Bohun, 4th Earl of Hereford, English soldier ( b. 1276 )

* 1273 – September 29 – Rudolph I of Germany is elected King of Germany over rival candidate King Otakar II of Bohemia, ending the Interregnum ; Otakar refuses to acknowledge Rudolph as the new king, leading to the outbreak of war in 1276.

* 1276 – June – King Rudolph I of Germany declares war on King Otakar II of Bohemia, a political rival ; by November, Otakar II is forced to cede four important territories as demanded by the diet of Nuremberg in 1274.

Under the influence of Charles of Anjou, he was elected Pope to succeed Innocent V on 12 July 1276 but died at Viterbo on 18 August 1276 from illness without ever having been ordained to the priesthood.

After the death of Pope Adrian V on 18 August 1276, Pedro Hispano was elected Pope on 13 September.

In July 1276, he was one of the three cardinals whom Pope Adrian V sent to Viterbo with instructions to treat with the German King, Rudolf I of Habsburg, concerning his imperial coronation at Rome and his future relations towards Charles of Anjou, whom papal policy supported.

At the papal conclave of January 1276 he became the first member of that order to become Pope.

He was a Roman nobleman who had served under eight Popes, been made cardinal-deacon of St. Nicola in Carcere Tulliano by Pope Innocent IV ( 1243 – 54 ), protector of the Franciscans by Pope Alexander IV ( 1254 – 61 ), inquisitor-general by Pope Urban IV ( 1261 – 64 ), and succeeded Pope John XXI ( 1276 – 77 ) after a six-month vacancy in the Holy See resolved in the papal election of 1277, largely through family influence.

It houses the sepulchre of Pope Adrian V, who died in Viterbo on 17 August 1276, considered the first monument by Arnolfo di Cambio.

However, these projects for a major new Crusade essentially came to a halt with the death of Gregory X on 10 January 1276.

* 1276 – Four different men are pope over the course of the year, as Popes Gregory X, Innocent V, and Adrian V all die in quick succession.

Other popes elected in Viterbo were Gregory X ( 1271 ) and John XXI ( 1276 ) ( who died in the papal palace when the ceiling of the recently-built library collapsed on him while he slept ), Nicholas III and the French Martin IV.

* Tebaldo Visconti ( c. 1210 – 1276 ), became Pope Gregory X.

Gregory X's strict regulations were abrogated in 1276 by Adrian V, but Celestine V, elected in 1294 following a two-year vacancy, restored them.

* 1276: Pope Gregory X — Pope Innocent V — Pope Adrian V — Pope John XXI

In fact after the death in 1276 of Pope Gregory X, the main supporter of the union of the churches, his successors maintained the same course and this restricted Charles ' movements.

The popes of the destroyed tombs were: Pope John X ( 914-928 ), Pope Agapetus II ( 946-955 ), Pope John XII ( 955-964 ), Pope Paschal II ( 1099 – 1118 ), Pope Callixtus II ( 1119 – 1124 ), Pope Honorius II ( 1124 – 1130 ), Pope Celestine II ( 1143 – 1144 ), Pope Lucius II ( 1144 – 1145 ), Pope Anastasius IV ( 1153 – 1154 ), Pope Clement III ( 1187 – 1191 ), Pope Celestine III ( 1191 – 1198 ), Pope Innocent V ( 1276 ).

** Giovanni Villani, chronicler of Florence ( b. c. 1276 )

** Vakhtang III of Georgia ( b. 1276 )

* 1276 – Ahmad al-Badawi, founder of the Sufi tariqah of Badawiyyah ( b. 1199 )

* May 19 – Louis d ' Évreux, son of Philip III of France ( b. 1276 )

* November 16 – Prince Hisaaki, Japanese shogun ( b. 1276 )

** Yesün Temür Khan, emperor of the Yuan Dynasty ( b. 1276 )

* August 2 – King Christopher II of Denmark ( b. 1276 )

# Anna ( b. 1276 / 78 – d. bef.

# Sempad ( b. 12 January 1276 / 11 January 1277 – d. 1310 or 1311 ), King of Armenia ( ruled 1297 to 1299 ).

# Isabella ( b. 12 January 1276 / 11 January 1277 – murdered May 1323 ), twin with Sempad ; married in 1293 with Amalric of Lusignan, Prince of Tyre, son of King Hugh III of Cyprus.