# Gregory X

> Pope from 1271 to 1276

**Wikidata**: [Q161740](https://www.wikidata.org/wiki/Q161740)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Pope_Gregory_X)  
**Source**: https://4ort.xyz/entity/gregory-x

## Summary
Pope Gregory X was the head of the Catholic Church from 1271 to 1276, serving as both spiritual leader and temporal ruler of the Papal States. Born Teobaldo Visconti, he is best known for his efforts to reform the Church, his involvement in the Ninth Crusade, and his role in convening the Second Council of Lyon to address Church unity and crusading efforts.

## Biography
- **Born**: c. 1210 (exact place unknown)
- **Nationality**: Italian (citizen of the Papal States)
- **Education**: Studied at the University of Paris
- **Known for**: Serving as Pope from 1271 to 1276, reforming papal elections, and attempting to unite the Eastern and Western Churches
- **Employer(s)**: Catholic Church (as priest and later Pope)
- **Field(s)**: Theology, Church governance, diplomacy

## Contributions
- **Papal Election Reform**: Gregory X issued the papal bull *Ubi periculum* in 1274, which established the conclave system for electing popes, requiring cardinals to be secluded until a new pope was chosen. This reform aimed to reduce delays and external interference in papal elections.
- **Second Council of Lyon (1274)**: Convened to address Church unity, crusading efforts, and reforms. The council attempted to reunite the Eastern Orthodox and Roman Catholic Churches, though the union was short-lived.
- **Ninth Crusade Involvement**: Gregory X supported and encouraged the Ninth Crusade (1271–1272), though it ultimately failed to achieve its objectives.
- **Diplomatic Efforts**: Worked to mediate conflicts between European powers and promote peace, including efforts to resolve disputes between the Holy Roman Empire and the Kingdom of Sicily.
- **Church Reforms**: Initiated reforms to improve the discipline and morality of the clergy, addressing issues such as simony and absenteeism.

## FAQs
**What was Gregory X's role in the Ninth Crusade?**
Gregory X supported the Ninth Crusade, which took place from 1271 to 1272, by encouraging European leaders to participate and providing spiritual and logistical support. However, the crusade did not achieve its goal of reclaiming the Holy Land.

**How did Gregory X reform the papal election process?**
In 1274, Gregory X issued the papal bull *Ubi periculum*, which introduced the conclave system. This required cardinals to be locked in seclusion until they elected a new pope, reducing delays and outside influence in the process.

**What was the significance of the Second Council of Lyon?**
The Second Council of Lyon, convened by Gregory X in 1274, aimed to reunite the Eastern Orthodox and Roman Catholic Churches, address Church reforms, and plan new crusades. While the union was briefly achieved, it did not last.

**Where was Gregory X educated?**
Gregory X studied at the University of Paris, one of the most prestigious institutions of learning in medieval Europe.

**What was Gregory X's nationality?**
Gregory X was Italian, born in the Papal States, which were territories under the direct rule of the Pope in central Italy.

## Why They Matter
Gregory X's papacy was marked by significant reforms and diplomatic efforts that had lasting impacts on the Catholic Church. His introduction of the conclave system for papal elections fundamentally changed how popes were chosen, ensuring greater efficiency and reducing external interference. His attempts to reunite the Eastern and Western Churches, though ultimately unsuccessful, demonstrated a commitment to Christian unity that influenced later ecumenical efforts. Additionally, his support for the Ninth Crusade and his diplomatic mediation between European powers reflected his broader role in shaping the political and religious landscape of medieval Europe.

## Notable For
- Issuing the papal bull *Ubi periculum* in 1274, which established the conclave system for papal elections.
- Convening the Second Council of Lyon in 1274 to address Church unity and reforms.
- Supporting the Ninth Crusade (1271–1272) and encouraging European participation.
- Attempting to reunite the Eastern Orthodox and Roman Catholic Churches.
- Initiating reforms to improve clergy discipline and address issues like simony.
- Serving as Pope during a critical period of Church history, balancing spiritual and temporal authority.

## Body
### Early Life and Education
Gregory X, born Teobaldo Visconti around 1210, was of Italian nobility. He studied at the University of Paris, a center of medieval learning, where he likely received a thorough education in theology and canon law. His early life and education prepared him for a career in the Church, and he eventually became a priest and later a cardinal.

### Papacy and Reforms
Gregory X was elected Pope in 1271, succeeding Pope Clement IV after a lengthy interregnum. His papacy was marked by a commitment to reform and unity within the Church. One of his most significant contributions was the issuance of the papal bull *Ubi periculum* in 1274, which established the conclave system for electing popes. This reform required cardinals to be secluded until a new pope was chosen, reducing the influence of external political pressures and ensuring a more efficient election process.

### Second Council of Lyon
In 1274, Gregory X convened the Second Council of Lyon, a major ecumenical council that aimed to address several critical issues facing the Church. The council sought to reunite the Eastern Orthodox and Roman Catholic Churches, which had been divided since the Great Schism of 1054. While a temporary union was achieved, it ultimately failed to endure. The council also discussed plans for new crusades and addressed various Church reforms, including efforts to improve clergy discipline and combat simony.

### Involvement in the Ninth Crusade
Gregory X was a strong supporter of the Ninth Crusade (1271–1272), which was led by Prince Edward of England (later King Edward I). The crusade aimed to reclaim the Holy Land from Muslim control but ultimately failed to achieve its objectives. Gregory X provided spiritual and logistical support for the crusade, encouraging European leaders to participate and offering indulgences to those who took up the cross.

### Diplomatic Efforts
Gregory X was actively involved in diplomatic efforts to mediate conflicts between European powers. He worked to resolve disputes between the Holy Roman Empire and the Kingdom of Sicily, seeking to promote peace and stability in the region. His diplomatic skills were also evident in his efforts to reunite the Eastern and Western Churches, demonstrating his commitment to Christian unity.

### Church Reforms
In addition to his work on papal elections, Gregory X initiated several reforms aimed at improving the discipline and morality of the clergy. He addressed issues such as simony (the selling of Church offices) and absenteeism, where clergy members neglected their duties by residing away from their assigned parishes. These reforms were part of his broader efforts to strengthen the Church and ensure its spiritual and administrative integrity.

### Legacy and Death
Gregory X's papacy lasted from 1271 until his death on January 10, 1276. His reforms, particularly the establishment of the conclave system, had a lasting impact on the Catholic Church. His efforts to promote unity and address Church corruption demonstrated his commitment to strengthening the Church during a challenging period in its history. Gregory X is remembered as a reformer and a diplomat who sought to balance the spiritual and temporal responsibilities of the papacy.

## References

1. BeWeB
2. Catholic-Hierarchy.org
3. Mirabile: Digital Archives for Medieval Culture
4. International Standard Name Identifier
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6. Enciclopedia dei Papi
7. Freebase Data Dumps. 2013
8. [Source](http://digitale.beic.it/primo_library/libweb/action/search.do?fn=search&vid=BEIC&vl%28freeText0%29=Gregorius)
9. Dizionario Biografico degli Italiani
10. Treccani's Enciclopedia on line
11. Enciclopedia Treccani
12. [Source](http://www.maru.firenze.sbn.it/MareMagnum/mare_magnum.htm)
13. [LIBRIS. 2012](https://libris.kb.se/katalogisering/rp3691s94lfx54n)
14. Dizionario di Storia
15. [Source](https://encyklopedia.pwn.pl/haslo/Grzegorz-X;3908474.html)
16. FactGrid
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