Saint Linus (Tuscia, 10 AD – Rome, 76 AD) is considered by the Pontifical Yearbook to be the second Bishop of Rome, succeeding the apostle Saint Peter, which is why he is identified as the second Pope by the Catholic Church. Tertullian indicates Saint Clement I as the successor of Peter,[3] however, Irenaeus refers to Linus as the second bishop of Rome and that he would be the same Linus mentioned by the Apostle Paul in his II Timothy 4:21.