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Pope Gregory X

Blessed Pope
Gregory X
Papacy began 1 September 1271
Papacy ended 10 January 1276
Predecessor Clement IV
Successor Innocent V
Ordination 19 March 1272
Personal details
Birth name Teobaldo Visconti
Born c. 1210
Piacenza, Holy Roman Empire
Died 10 January 1276(1276-01-10)
Arezzo, Holy Roman Empire
Coat of arms }
Feast day 10 January
Venerated in Roman Catholic Church
Title as Saint Blessed
Beatified 8 July 1713
by Pope Clement XI
Other popes named Gregory
Papal styles of
Pope Gregory X
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. 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 Catholic Church.


  • Biography 1
  • Papacy 2
    • Vestments 2.1
  • Diplomatic communications with Mongols 3
  • See also 4
  • Notes 5


Tomb of Pope Gregory X in Arezzo's Cathedral of Saint Donatus.
Niccolo and Maffeo Polo remitting a letter from Kubilai to Pope Gregory X in 1271.
The Polos returned to Kubilai (seated, right) in 1275 with a letter and presents from Pope Gregory X.[1]

Born in Piacenza, he spent most of his ecclesiastical career in the north, in the Low Countries.

Gregory succeeded Pope Clement IV in 1271 after the papal chair had been vacant for three years due to divisions among the Cardinals. The College of Cardinals was equally split between French and Italian Cardinals who wanted a Pope from their country due to the ongoing political situation with Charles of Anjou, younger brother of King Louis IX of France, who had usurped the throne of Sicily by arms and perpetually intervened in the political affairs of the entire Italian peninsula. The deadlock was finally broken when the citizens of Viterbo, where the Cardinals were assembled, removed the roof from the building they were meeting in and locked them in, only allowing them bread and water. More than a year later, the Cardinals elected Pope Gregory X.[2] He was considered a strong choice because even though he was Italian, he had spent most of his career north of the Alps and thus had not been embroiled in recent Italian political controversies.


Gregory's election came as a complete surprise to him, partially because it happened while he was engaged in the Psalm 137).

Sometime during his reign as Pope, Gregory wrote a letter against the charges of "blood libel" and persecution against the Jews.[1]

On his arrival at Rome, his first act was to summon the council which met at the Second Council of Lyons in 1274 for the purpose of considering the East-West Schism, the condition of the Holy Land, and the abuses of the Roman Catholic Church. It was while returning from that council that he died at Arezzo on 10 January 1276. He is still buried inside the Cathedral Church. He is responsible for the papal bull which was subsequently incorporated into the code of canon law that regulated all conclaves for papal elections until the reforms of Pope Paul VI in the twentieth century.

He was succeeded by Pope Innocent V.


Writing in L’Osservatore Romano, Agostino Paravicini Bagliani says that the popular belief that St. Pius V (1566-72) was the first Pope to wear the white cassock is inaccurate. Instead, writes Bagliani, the first document that mentions the Pope’s white cassock dates from 1274. “The first pope to be solemnly invested with the red mantle immediately after his election was Gregory VII,” the scholar added, noting that traditionally “from the moment of his election the Pope put on vestments of two colors: red (cope, mozzetta, shoes); and white (cassock, socks).”[3] [4]

Diplomatic communications with Mongols

As soon as he was elected in 1271, Pope Gregory received a letter from the Mongol Great Khan Kublai, remitted by Niccolo and Matteo Polo following their travels to his court in Mongolia. Kublai was asking for the dispatch of a hundred missionaries, and some oil from the lamp of the Holy Sepulcher. The new Pope could spare only two friars and some lamp oil. The friars turned back soon after the party left for Mongolia. The two Polos (this time accompanied by the young Marco Polo, who was then 17 years old) returned to the Mongol Empire and remitted the oil from the Pope to Kublai in 1275.[5]

The Mongol legates would accompany the Crusade, and that they would be in charge of coordinating military operations with the Il-Khan.[6] However, these projects for a major new Crusade essentially came to a halt with the death of Gregory X on 10 January 1276. The money which had been saved to finance the expedition was instead distributed in Italy.[7]

See also


  1. ^ "Le Livre des Merveilles", p.18
  2. ^ Wright, David. 2005, April 18. "Inside Longest Papal Conclave in History." ABC News.
  3. ^ [2]
  4. ^ [3]
  5. ^ Medieval Expansion of Europe, p. 113
  6. ^ Richard, "Histoire des Croisades", p.465
  7. ^ Riley-Smith, "Atlas des Croisades", p.69
Catholic Church titles
Preceded by
Clement IV
Succeeded by
Innocent V
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