Saint Irenaeus

The life

Information as to his life is scarce, and in some measure inexact. He was born in Proconsular Asia, or at least in some province bordering thereon, in the first half of the second century; the exact date is controverted, between the years 115 and 125, according to some, or, according to others, between 130 and 142. It is certain that, while still very young, Irenaeus had seen and heard the holy Bishop Polycarp (d. 155) at Smyrna. During the persecution of Marcus Aurelius, Irenaeus was a priest of the Church of Lyons. The clergy of that city, many of whom were suffering imprisonment for the Faith, sent him (177 or 178) to Rome with a letter to Pope Eleutherius concerning Montanism, and on that occasion bore emphatic testimony to his merits. Returning to Gaul, Irenaeus succeeded the martyr Saint Pothinus as Bishop of Lyons. During the religious peace which followed the persecution of Marcus Aurelius, the new bishop divided his activities between the duties of a pastor and of a missionary (as to which we have but brief data, late and not very certain) and his writings, almost all of which were directed against Gnosticism, the heresy then spreading in Gaul and elsewhere.

From the Catholic Encyclopedia (1913), article “St. Irenaeus”, in the public domain. Some details may since have been revised by later research. Read the whole article on Wikisource.