Written by Guide Catholic
Pope Clement IV (183º): Biography, Pontificate & Legacy
Pontificate: 5 February 1265–29 November 1268 · Origin: Saint-Gilles, France · Birth name: Clemens Quartus

Clement IV was the 183rd pope of the Catholic Church, reigning 5 February 1265–29 November 1268 during the high Middle Ages. Subject of the Kingdom of France.
Who Was Pope Clement IV?
Clement IV holds the 183º place among Roman pontiffs, with a recorded reign of 5 February 1265–29 November 1268 inside the high Middle Ages. Subject of the Kingdom of France. What follows is a structured biography — early life, context, acts, and succession — written for Catholics who want Clement IV in context.
Early Life & Background
Before election he was known as Gui Foucois. Born 23 November 1190 Saint-Gilles, Languedoc, Kingdom of France, he entered a world shaped by politics and piety very different from today's global Church.
Historical Context
Clement IV (#undefined) led during crusades, monastic reform, and cathedral culture — and during sharp contests between popes and emperors over authority in Christendom.
Pontificate & Key Events
The pontificate (5 February 1265–29 November 1268) centered on governance during the high Middle Ages.
Papal Acts & Achievements
Acts associated with Clement IV (#183, 5 February 1265–29 November 1268) still draw historians and Catholics who want more than a one-line summary. His reign remains a link in the succession now counted at 267 popes.
Key Highlights
- 183rd pope of the Catholic Church
- Pontificate: 5 February 1265–29 November 1268
- Shepherded the Church during the high Middle Ages
- Successor of St. Peter in the official Catholic list
Legacy in the Catholic Church
Clement IV remains pope 183º in the Annuario Pontificio. Set against the high Middle Ages, Clement IV's choices show both the limits of any one pontiff and the continuity of the office he held.
Why Catholics Study This Pope Today
Reading Clement IV as pope 183º (5 February 1265–29 November 1268) is a way to study how Rome answered the crises of the high Middle Ages. Begin with this documented note: Subject of the Kingdom of France. Use the neighboring pontiff links below to test whether Clement IV's reign looks unique or typical for the high Middle Ages.
Place in the Line of Succession
Clement IV followed Pope Urban IV (182º, 29 August 1261–2 October 1264) after a transition shaped by the politics and piety of their shared century. He was followed by Pope Bl. Gregory X (184º, 1 September 1271–10 January 1276), whose biography continues the chain on Guide Catholic. For the full chronological map, see our complete list of all 267 popes — then read neighboring biographies for contrast, not only continuity.