# Pope Gregory X - Pope

URL: https://christianity-history.com/popes/pope-gregory-x
Pontificate: 1 September 1271 – 10 January 1276
Number in the papal list: 184
Born-Died: c. 1210 - 1276
Papal era: High Medieval Papacy
Wikipedia: https://en.wikipedia.org/wiki/Pope_Gregory_X

Citizen of the Free Commune of Piacenza. Convened the Second Council of Lyon and issued the bull Ubi periculum (1274), regulating conclaves until the 20th century.

## Succession
- Previous in list: [Pope Clement IV](https://christianity-history.com/popes/pope-clement-iv)
- Next in list: [Pope Innocent V](https://christianity-history.com/popes/pope-innocent-v)

## Timeline events during this pontificate
- 1274 - [Second Council of Lyon](https://christianity-history.com/timeline/1274-second-council-of-lyon)