Pope and Saint Clement , or in Latin Clemens Romanus and in Greek Κλήμης Ῥώμης, was the third Bishop of Rome and a disciple who studied directly under Saint Peter the Apostle. The Liber Pontificalis lists the Bishops of Rome as Saint Peter, Pope Linus and then to Saint Clement I with Saint Clement being tasked with leading the Church as a whole. Tertullian considered Saint Clement I to be a direct and immediate successor of Saint Peter. In the third and fourth centuries, a tradition began that S