Written by Guide Catholic
Pope Benedict III (104º): Biography, Pontificate & Legacy
Pontificate: 29 September 855 –17 April 858 · Origin: Rome, Estados Papais · Birth name: Benedictus Tertius
Benedict III was the 104th pope of the Catholic Church, reigning 29 September 855 –17 April 858 during the early medieval papacy. Subject and later the sovereign of the Papal States.
Who Was Pope Benedict III?
Among the 267 popes, Benedict III is number 104, remembered for the years 29 September 855 –17 April 858 in the early medieval papacy. Subject and later the sovereign of the Papal States. Use the sections below to move from a one-line summary of Benedict III to a usable historical and spiritual picture.
Early Life & Background
Born Benedictus, he entered a world shaped by politics and piety very different from today's global Church.
Historical Context
Benedict III (#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 (29 September 855 –17 April 858) centered on governance during the early medieval papacy.
Papal Acts & Achievements
Acts associated with Benedict III (#104, 29 September 855 –17 April 858) 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
- 104th pope of the Catholic Church
- Pontificate: 29 September 855 –17 April 858
- Shepherded the Church during the early medieval papacy
- Successor of St. Peter in the official Catholic list
Legacy in the Catholic Church
Benedict III remains pope 104º in the Annuario Pontificio. Set against the early medieval papacy, Benedict III's choices show both the limits of any one pontiff and the continuity of the office he held.
Why Catholics Study This Pope Today
Catholics who open a page on Benedict III usually want more than a birth-death line — they want to know what #104 did inside the early medieval papacy. Begin with this documented note: Subject and later the sovereign of the Papal States. Use the neighboring pontiff links below to test whether Benedict III's reign looks unique or typical for the early medieval papacy.
Place in the Line of Succession
Benedict III followed Pope St. Leo IV LEO Quartus (103º, 10 April 847 –17 July 855) after a transition shaped by the politics and piety of their shared century. He was followed by Pope St. Nicholas I the Great (105º, 24 April 858 –13 November 867), 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.