St. Irenaeus (saint Irénée) was the 2nd bishop of Lyon and with St. Pothinus, whom he succeeded after the persecution of 177, one of the founders of the Church of Lyon.
He was probably born near Smyrna in present-day Turkey between 130 and 140 A.D. As a child he was given religious instruction by Polycarp, bishop of Smyrna and a disciple of John the Apostle. A peacemaker, he was also a great theologian, who fought the sectarian deviations of his time. Two of his works are still extant : the Adversus Haereses and the Demonstration of Apostolic Preaching.
He was long venerated as a martyr, but we have no historical proof of this martyrdom ; he may have disappeared on the occasion of the reprisals following Albinus’rebellion against Septimus Severus in 197.
His body lay in the crypt of St. John’s basilica, later named St. Irenaeus’, as early as the beginning of the 6th century. Around the middle of the same century Gregorius Turonensis saw his grave flanked by those of the martyrs Alexander and Epipodius. All three bodies disappeared in 1562 at the time of the Wars of Religion, but their altars are still there.