Kirchenlehrer
Over its two thousand-year history, the Church of Italy grew in size and influence producing and harboring (sometimes before martyrdom) some of the greatest leaders and movers of Catholic Christianity including Priscilla and Aquila; Ignatius of Antioch, martyred in Rome; Polycarp, martyred in Rome and a disciple of John the Evangelist; Agnes, Roman martyr; Lawrence, martyr; Justin Martyr, teacher and martyr; Hippolytus, priest and martyr; Cecilia, Roman martyr; Ambrose of Milan, bishop and Doctor of the Church; Jerome, theologian and Doctor of the Church; Benedict of Nursia, founder of the Benedictine order and of Western monasticism; Leo the Great, bishop of Rome and Doctor of the Church; Gregory the Great, bishop of Rome and Doctor of the Church; Augustine of Canterbury, Roman monk, Benedictine missionary to England, later English bishop; Urban II, pope or Bishop of Rome who called for the First Crusade; Anselm of Canterbury, Italian-born philosopher, Doctor of the Church and later English bishop; Francis of Assisi, mystic and founder of the Franciscans; Bonaventure of Bagnorea, Franciscan theologian and Doctor of the Church; Thomas Aquinas, Dominican theologian, philosopher, and Doctor of the Church; Dante, poet; Catherine of Siena, mystic, reformer, and Doctor of the Church; Monteverdi, composer; Robert Bellarmine of Tuscany, Jesuit theologian and Doctor of the Church; Antonio Vivaldi, priest and composer; Leo XIII, bishop of Rome and social reformer; Pius XII, bishop of Rome; John XXIII, bishop of Rome and initiator of Second Vatican Council, among many others. One could add to this list the founders of various contemporary lay ecclesial movements, notably Luigi Giussani, founder of Communion And Liberation, and Chiara Lubich, founder of the Focolare Movement. Also, Andrea Riccardi, founder of the Community of Sant'Egidio, now one of the great faith based organizations in the world.