St. Cletus was the third bishop of Rome, and succeeded St. Linus, which circumstance alone shows his eminent virtue among the first disciples of St. Peter in the West. He sat twelve years, from 76 to 89. The canon of the Roman mass, (which Bossuet and all others agree to be of primitive antiquity,) Bede, and other Martyrologists, style him a martyr. He was buried near St. Linus, on the Vatican, and his relics still remain in that church.