Pope Sergius IV (142º): Biography, Pontificate & Legacy

Who Was Pope Sergius IV?

Among the 267 popes, Sergius IV is number 142, remembered for the years 31 July 1009 –12 May 1012 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 Sergius IV to a usable historical and spiritual picture.

Early Life & Background

Before election he was known as Pietro Martino Boccadiporco, O.S.B.. Born circa 970 Rome, Papal States, he entered a world shaped by politics and piety very different from today's global Church. Member of the Order of Saint Benedict. Religious formation in Order of Saint Benedict shaped his approach to the papal office.

Historical Context

Sergius IV (#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 (31 July 1009 –12 May 1012) centered on governance during the early medieval papacy.

Papal Acts & Achievements

Acts associated with Sergius IV (#142, 31 July 1009 –12 May 1012) 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

• 142nd pope of the Catholic Church
• Pontificate: 31 July 1009 –12 May 1012
• Shepherded the Church during the early medieval papacy
• Successor of St. Peter in the official Catholic list

Legacy in the Catholic Church

Sergius IV remains pope 142º in the Annuario Pontificio. Set against the early medieval papacy, Sergius 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

Catholics who open a page on Sergius IV usually want more than a birth-death line — they want to know what #142 did inside the early medieval papacy. Begin with this documented note: Subject and later the sovereign of the Papal States. Compare Sergius IV with the biographies of his predecessor and successor linked below to see reform, rupture, or quiet continuity.

Place in the Line of Succession

Sergius IV followed Pope John (141º, 25 December 1003 –18 July 1009) after a transition shaped by the politics and piety of their shared century. He was followed by Pope Benedict VIII (143º, 18 May 1012 –9 April 1024), 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.