Daily Saint

St. Januarius

Third Century–c. September 19, 305


Patron Saint of Naples, blood banks, and protection from volcanic eruptions

St. Januarius

St. Januarius, also known as San Gennaro, is one of the most beloved martyrs of the early Church. Although many details of his life have been lost to history, his witness of faith and the enduring devotion of Christians have preserved his memory for more than 17 centuries.

Januarius served as Bishop of Benevento in southern Italy during the persecution of Christians under Emperor Diocletian. According to ancient tradition, he traveled to visit imprisoned Christians, including some deacons, who had been arrested for their Faith, encouraging them to remain faithful to Christ despite the danger.

Recognized as a Church leader by the jail keeper, Januarius was later arrested along with his deacon and lector. Refusing to deny Christ, he was condemned to death along with his companions. Tradition records that they first survived attempted execution in an arena before being beheaded around A.D. 305 near Pozzuoli.

Following his martyrdom, Christians carefully preserved his memory and honored him as a faithful shepherd who willingly laid down his life for his people. Devotion to Januarius grew rapidly throughout southern Italy, especially in Naples, where his relics were eventually enshrined.

Many miracles were attributed to Januarius after his death. For centuries, believers have looked to him for protection from persecution, disease, famine, and natural disasters. St. Januarius is honored as the patron saint of Naples, where his feast day is celebrated with deep devotion.

Discover More About St. Januarius


What is the famous miracle associated with St. Januarius?

The best-known tradition connected with St. Januarius is the liquefaction of his blood. Two sealed ampoules believed to contain his dried blood are preserved in the Cathedral of Naples. Several times each year, especially on his feast day, the dried substance is often observed to become liquid during public prayer. This event has been recorded for centuries and is regarded by many Catholics as an extraordinary sign associated with the saint. While the Church permits devotion to this tradition, belief in the miracle is not required as a matter of Catholic Faith.

Where are St. Januarius’s relics kept today?

The principal relics of Januarius are preserved in the Cathedral of Naples, also known as the Cathedral of San Gennaro. His relics have been honored there for centuries and continue to draw pilgrims from around the world. The cathedral houses both the saint’s relics and the famous ampoules traditionally believed to contain his blood. Throughout history, the people of Naples have turned to his intercession during times of war, plague, famine, earthquakes, and volcanic threats.

Why is St. Januarius the patron saint of Naples?

The people of Naples have honored St. Januarius as their heavenly protector for well over a thousand years. His relics were transferred to the city, where devotion to him became deeply woven into its religious and cultural life. Throughout history, Neapolitans have invoked his prayers during epidemics, natural disasters, and eruptions of nearby Mount Vesuvius. In 1631, during a massive, catastrophic eruption that threatened to destroy Naples, the faithful processed with the saint’s relics near the lava flows. Local tradition holds that the terrifying advance of the lava suddenly stopped, sparing the city. His enduring patronage reflects not only ancient tradition but also the deep confidence generations of Christians have placed in his intercession before God.

The Seven Sorrows of the Blessed Virgin Mary

Meditate on the Seven Sorrows of Mary

Get the free eBook, The Seven Sorrows of the Blessed Virgin Mary.

The Blessed Virgin Mary bore extreme pains throughout her life. And as the mother of the Suffering Servant (Isaiah 53), she witnessed her Son’s Passion and Death on the Cross. This is why, as we face our own pains and temptations, we should turn to Our Lady of Sorrows and meditate on her Seven Dolors, or Sorrows.

This free eBook will encourage you to meditate on these Sorrows that pierced Mary’s Immaculate Heart. Use the form below to tell us where to send your free eBook, The Seven Sorrows of the Blessed Virgin Mary.

Additional Resources

Explore With the Miracle Hunter – “Naples”

“Miracle Hunter” Michael O’Neill travels to Naples to probe the mystery behind St. Januarius. On his feast day, the dried blood of this third-century martyr is said to liquefy, a sign that no harm will befall his people.

WATCH NOW

EWTN Newsreel – “St. Januarius in 303 A.D.”

The year 303 A.D: During a time of great Christian persecution, Bishop Januarius is captured.

WATCH NOW

Grow Closer to Our Heavenly Friends with the Daily Saint Email

Be inspired to follow in the footsteps of the saints. Subscribe to receive the Daily Saint, featuring a brief biography delivered to your inbox each day.

Start now and let the intercession and witness of the saints draw you closer to God.

EWTN Daily Saint Card
See Today’s Daily saint »

Your Faith Journey with EWTN

As we deepen our relationship with the Eternal Word, Jesus Christ, we grow in grace and are transformed by His love and mercy.