I am not sure if he was ever in Rome, but the Scriptures do NOT portray him as the head of anything. That much is very plain. Yes, I am saying he was never a pope to begin with. See my proofs posted on another thread. They were, of course, criticized, but not refuted.
By denying Peter was in Rome, you are trying to discredit Peter as having the primacy, and by doing so, you attempt to deny he was the first pope, therefore the Catholic claim of Apostolic Succession would fall apart. By your denying Apostolic Succession, you will then try to show that the Catholic church is not the church which Jesus founded.
Interestingly, if you ever reach the point (which you never could), then it would be impossible for you to fill the void of which church Jesus Christ did found if it were not the Catholic church. So, you have presented a circular argument for yourself, an argument which has no beginning and no end.
But you will try in a futile attempt on your part, as you completely ignore an overwhelming deposit of genuine historical documents, and expert knowledgeable people to do the same.
Here are just a few historical documents proving Peter was in fact in Rome and also died there:
**St Iraneus, “Against Heresies”, 3,1,1, 180 A.D. J208
“…in their own dialect, while Peter and Paul were evangelizing at Rome, and laying the foundations of the church”.
Tertullian, “The demurrer against the heretics”, XXXII,1
“…like the church of the Romans where Clement was ordained by Peter”.
Who has the authority to ordain priests? Only bishops do. Clement was ordained by the Bishop of Rome, Peter.
Eusebius, “History of the Church”, 3,2, 300 A.D. J652
“After the martyrdom pf Paul and Peter, Linus was the first appointed to the Episcopacy of the church at Rome”.
Saint Augustine, “Letter to Generous”, 400 A.D., J1418
"If the very order of episcopal succession is to be considered, how much more surely, truly, and safely do we number them from Peter himself, to whom, as to one representing the whole church, the Lord said “Upon this rock I will build my church, AND THE GATES OF HELL WILL NOT CONQUER IT”.**
Are you now going to deny these historical facts?