Written by Guide Catholic
Pope St. Marcellinus (29º): Biography, Pontificate & Legacy
Pontificate: 30 June 296 –25 October 304 · Origin: Rome, Italy, Roman Empire · Birth name: Marcellinus
St. Marcellinus was the 29th pope of the Catholic Church, reigning 30 June 296 –25 October 304 during the apostolic and patristic Church. Also revered as a saint in Eastern Christianity, with a feast day of 7 June. The Catholic Church venerates him as a saint.
Who Was Pope Marcellinus?
St. Marcellinus holds the 29º place among Roman pontiffs, with a recorded reign of 30 June 296 –25 October 304 inside the apostolic and patristic Church. Also revered as a saint in Eastern Christianity, with a feast day of 7 June. What follows is a structured biography — early life, context, acts, and succession — written for Catholics who want Marcellinus in context. Catholics also honor him as a saint whose intercession remains part of living devotion.
Early Life & Background
Born Roma, Italia, Roman Empire, he entered a world shaped by politics and piety very different from today's global Church.
Historical Context
Marcellinus (#undefined) shepherded Christians when the faith was still illegal or barely tolerated inside the Roman Empire; records are thin, yet tradition preserves these earliest successors of St. Peter.
Pontificate & Key Events
The pontificate (30 June 296 –25 October 304) centered on governance during the apostolic and patristic Church.
Papal Acts & Achievements
Acts associated with Marcellinus (#29, 30 June 296 –25 October 304) 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
- 29th pope of the Catholic Church
- Pontificate: 30 June 296 –25 October 304
- Venerated as a saint in the Catholic Church
- Also revered as a saint in Eastern Christianity, with a feast day of 7 June.
Legacy in the Catholic Church
St. Marcellinus remains pope 29º in the Annuario Pontificio. The Church still points to Marcellinus's virtues for imitation. Set against the apostolic and patristic Church, Marcellinus'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 St. Marcellinus usually want more than a birth-death line — they want to know what #29 did inside the apostolic and patristic Church. Because the Church venerates Marcellinus, you may seek his intercession and check his feast in the Martyrology or local calendar. Begin with this documented note: Also revered as a saint in Eastern Christianity, with a feast day of 7 June. Compare Marcellinus with the biographies of his predecessor and successor linked below to see reform, rupture, or quiet continuity.
Place in the Line of Succession
St. Marcellinus followed Pope St. Caius (28º, 17 December 283 –22 April 296) after a transition shaped by the politics and piety of their shared century. He was followed by Pope St. Marcellus I (30º, 27 May 308 –16 January 309), 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.