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Gregory X

Blessed Pope
Gregory X
B Gregor X.jpg
Papacy began 1 September 1271
Papacy ended 10 January 1276
Predecessor Clement IV
Successor Innocent V
Orders
Ordination 19 March 1272
Consecration 27 March 1272
by John of Toledo
Personal details
Birth name Teobaldo Visconti
Born c. 1210
Piacenza, Holy Roman Empire
Died 10 January 1276(1276-01-10) (aged 66)
Arezzo, Holy Roman Empire
Previous post Archdeacon of Liège (1246-1271)
Coat of arms {{{coat_of_arms_alt}}}
Sainthood
Feast day 10 January
Venerated in Roman Catholic Church
Title as Saint Blessed
Beatified 8 July 1713
Rome, Papal States
by Pope Clement XI
Attributes
Patronage
Papal styles of
Pope Gregory X
C o a Gregorio X.svg
Reference style His Holiness
Spoken style Your Holiness
Religious style Holy Father
Posthumous style Blessed

Pope Gregory X (Latin: Gregorius X; c. 1210 – 10 January 1276), born Teobaldo Visconti, was Pope from 1 September 1271 to his death in 1276 and was a member of the Secular Franciscan Order. He was elected at the conclusion of a papal election that ran from 1268 to 1271, the longest papal election in the history of the Roman Catholic Church.

He convened the Second Council of Lyons and also made new regulations in regards to papal conclaves. Though briefly annulled by Pope Adrian V and Pope John XXI, these regulations remained in force until the 20th century, when they were altered by Pope Paul VI.

Pope Clement XI beatified him in 1713 after the confirmation of his cultus.

Teobaldo Visconti, a member of the House of Visconti, was born in Piacenza around 1210.

It is said that he began his career by attaching himself to the household of the Cistercian Cardinal Giacomo de Pecorari, Bishop of Palestrina (1231-1244), who was also from Piacenza. He was attracted by the reputation of holiness which the Cardinal enjoyed; he had been elected abbot of the monastery of Trois-Fontaines in Champagne. Teobaldo became the Cardinal's Oeconomus or Majordomo, and was therefore in constant attendance. The Cardinal was Legate of Pope Gregory IX in Tuscany in 1235, in Lombardy in 1236-1237, and in Provence, France and Germany in 1239-1241. It was probably during the assignment in Provence that Teobaldo became known to important French clergy and laity. He was already Canon of the Basilica of S. Antonino in Piacenza when he returned to Piacenza on business of the Cardinal in 1239.


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