Irenaeus.  Born about 130, he was brought up in Smyrna as a disciple of St. Polycarp, the bishop of the city.  By 177 he was priest in Lyons in France, and shortly afterwards became bishop of that city.  In his writings, he sought to defend the faith against the heresy of Gnosticism.  Tradition has it that he was martyred about the year 200 .A.D.