Written by Guide Catholic
Pope John XIII (133º): Biography, Pontificate & Legacy
Pontificate: 1 October 965 –6 September 972 · Origin: Rome, Estados Papais · Birth name: Ioannes Decimus Tertius
John XIII was the 133rd pope of the Catholic Church, reigning 1 October 965 –6 September 972 during the early medieval papacy. Subject and later the sovereign of the Papal States.
Who Was Pope John XIII?
John XIII holds the 133º place among Roman pontiffs, with a recorded reign of 1 October 965 –6 September 972 inside the early medieval papacy. Subject and later the sovereign of the Papal States. What follows is a structured biography — early life, context, acts, and succession — written for Catholics who want John XIII in context.
Early Life & Background
Born Giovanni dei Crescenzi, he entered a world shaped by politics and piety very different from today's global Church.
Historical Context
John XIII (#undefined) reigned while Western Roman order fractured, new kingdoms rose, and missionaries carried Christianity across Europe under papal encouragement or correction.
Pontificate & Key Events
The pontificate (1 October 965 –6 September 972) centered on governance during the early medieval papacy. Chronicled after his death as "the Good".
Papal Acts & Achievements
Acts associated with John XIII (#133, 1 October 965 –6 September 972) 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
- 133rd pope of the Catholic Church
- Pontificate: 1 October 965 –6 September 972
- Shepherded the Church during the early medieval papacy
- Successor of St. Peter in the official Catholic list
Legacy in the Catholic Church
John XIII remains pope 133º in the Annuario Pontificio. Set against the early medieval papacy, John XIII's choices show both the limits of any one pontiff and the continuity of the office he held.
Why Catholics Study This Pope Today
Place John XIII on your mental map: 133º successor of Peter, reigning 1 October 965 –6 September 972, formed by the early medieval papacy. Begin with this documented note: Subject and later the sovereign of the Papal States. Then step back to the full list of 267 popes to see where John XIII sits between crisis and consolidation.
Place in the Line of Succession
John XIII followed Pope Leo VIII LEO Octavus (132º, 23 June 964 –1 March 965) after a transition shaped by the politics and piety of their shared century. He was followed by Pope Benedict VI (134º, 19 January 973 –8 June 974), 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.