Pope St. Pius V (225º): Biography, Pontificate & Legacy
Pontificate: 7 January 1566–1 May 1572
St. Pius V was the 225th pope of the Catholic Church, reigning 7 January 1566–1 May 1572 during the Renaissance papacy. Issued the 1570 Roman Missal. The Catholic Church venerates him as a saint.
Who Was Pope Pius V?
This biography of St. Pius V (225º) covers background, major events, and legacy in the line of St. Peter. During the Renaissance papacy, the Bishop of Rome exercised teaching, sanctifying, and governing authority for the universal Church. Catholics honor him as a saint whose intercession remains available to the faithful.
Early Life & Background
Before election he was known as Antonio Ghislieri, O.P.. Born 17 January 1504 Bosco, Duchy of Milan, he entered a world shaped by politics and piety very different from today's global Church. Subject of the Duchy of Milan. Member of the Dominican Order, with the religious name Michele. Religious formation in Dominican Order shaped his approach to the papal office.
Historical Context
Pius V sat on the Chair of Peter during the Renaissance, when popes were among the most powerful patrons of art and architecture in Europe — but also faced corruption scandals, the Protestant Reformation, and the discovery of the New World.
Pontificate & Key Events
The pontificate (7 January 1566–1 May 1572) centered on governance during the Renaissance papacy. Excommunicated Queen Elizabeth I of England.
Papal Acts & Achievements
Pius V left a distinct mark through decisions that historians still debate and Catholics still study. His reign contributed to the continuous apostolic succession now numbering 267 popes. Papal motto: Utinam dirigantur viae meae ad custodiendas ("O that my ways may be steadfast in keeping Thy statutes").
Key Highlights
- 225th pope of the Catholic Church
- Pontificate: 7 January 1566–1 May 1572
- Venerated as a saint in the Catholic Church
- Excommunicated Queen Elizabeth I of England.
- Issued the 1570 Roman Missal.
Legacy in the Catholic Church
St. Pius V remains pope 225º in the Annuario Pontificio. The Church venerates his feast and holds up his virtues for imitation. Read against the Renaissance papacy, his pontificate shows how Providence works through imperfect ministers without abandoning the Barque of Peter.
Why Catholics Study This Pope Today
Studying St. Pius V helps Catholics see how the Holy Spirit guided the Church through the Renaissance papacy — with human weakness and grace intertwined. You may ask Pius V for intercession and look up his feast in the Roman calendar or Martyrology. Place this pope in context using our chronological list of all 267 popes and the biographies of his immediate predecessor and successor linked below.
Place in the Line of Succession
St. Pius V followed Pope Pius IV (224º) in the unbroken line of apostolic succession from St. Peter. Upon his death or resignation, he was succeeded by Pope Gregory XIII (226º), who continued the mission of shepherding the universal Church. Explore the full chronological chain in our complete list of all 267 popes, or read the biographies of neighboring pontiffs linked below.