Better known as Saint Cyril the philosopher-monk, brother of Saint Methodius, and co-creator of the alphabet that became the basis for Cyrillic script.

Saint Cyril of Rome, better known as Saint Cyril the Philosopher, was a Basilian monk who, together with his brother Saint Methodius, brought Christianity and a written liturgical language to the Slavic peoples of Great Moravia. He died at Rome on 14 February 869, at about the age of 41, having taken monastic vows there shortly before his death. He and Methodius are jointly honored as Apostles to the Slavs and, in the West, as co-patrons of Europe.

Quick Facts

• Born: c. 826–827
• Died: 14 February 869, Rome, Italy (age approx. 41)
• Venerated as: Monk, Order of Saint Basil
• Brother of Saint Methodius

Who Was Saint Cyril of Rome?

Cyril, originally named Constantine and later taking the name Cyril upon becoming a monk, was a Byzantine scholar and monk who, with his brother Methodius, undertook the mission to Great Moravia at the request of its ruler, seeking to bring Christian teaching to the Slavic peoples in their own language. To accomplish this, Cyril is credited with devising the Glagolitic alphabet, the direct ancestor of the Cyrillic script still used across much of the Slavic world today, in order to translate Scripture and the liturgy into Old Church Slavonic.

Historical Setting

Ninth-century Great Moravia sat at the crossroads of competing missionary efforts from both the Byzantine East and the Latin West, and the brothers’ mission was controversial precisely because it insisted on using the Slavic vernacular for liturgy and Scripture at a time when Latin dominated Western missionary practice. Cyril traveled to Rome to defend this practice before the Pope, and it was there, shortly after receiving papal approval for the Slavonic liturgy, that he fell ill, became a monk, and died.

Why the Church Remembers Saint Cyril of Rome

The Church remembers Cyril for a missionary achievement of extraordinary and lasting consequence: giving the Slavic peoples both the Christian faith and a written language in which to receive it, a legacy that shaped the religious and cultural development of a large part of Europe and that Pope John Paul II honored by naming Cyril and Methodius co-patrons of Europe alongside Saint Benedict.

Canonization and Feast Day

Cyril’s veneration is ancient, rooted in his immediate recognition as a saint following his death and burial in Rome; he and Methodius were formally proclaimed co-patrons of Europe by Pope John Paul II in 1980, a modern reaffirmation of a centuries-old cult.

What Catholics Can Learn Today

Cyril’s insistence on bringing the Gospel to the Slavic peoples in their own language, at real personal cost and controversy, is a reminder that authentic evangelization requires meeting people where they actually are, not simply extending an existing structure unchanged into a new culture.

A Prayer to Saint Cyril of Rome

Saint Cyril of Rome, apostle to the Slavic peoples and patron of Europe, pray for missionaries today working to bring the Gospel to every language and culture. Help the Church always find the words each people needs to hear the truth of Christ. Amen.

Sources

• Butler’s Lives of the Saints
• Vatican.va, Slavorum Apostoli (John Paul II, 1985)
• New Advent Catholic Encyclopedia