From the earliest extant records that we have, it seems Clement is considered to be the third pastor of the church at Rome. He seems to have followed Linus and Cletus (Anacletus). We know nothing about either one of these men. They are simply names that were found on a list. Clement would probably be nothing more than a name on a list but he wrote an epistle, or letter to the believers in the church at Corinth. Clement's letter has been preserved and exists today.
The only writing that we know to be authentically from Clement is his letter to the Corinthians. The value of this letter is seen in the fact that Clement asserts the authority of the Elders as rulers of the church. His basis of this assertion was that, "on the grounds that the Apostles had appointed such." This letter and assertion was in response to the actions of the Corinthian church when some Elders had been dismissed by the church. Clement's letter was the first document aside from the New Testament to affirm the apostolic appointment of Elders as the ruling body in individual local churches.
The Liber Pontificals names Clement as the third pope of the church. We know this not to be true due to there being no validity to the offices of Bishops, Cardinals, and or Pope. The word επισκοπη (ep-is-kop-ay’) is synonomus with the term πρεσβυτερος (pres-boo’-ter-os) or ποιμην (poy-mane’). The bible knows nothing of a separate office of "bishop" that has authority over individual local churches or pastors. Clement in his letter uses the term Elder and Bishop interchangeably as the officers of the local church.