The early lists or catalogues of the Bishops of Rome, just casually referred to, are another important and weighty witness to the ancient and generally received tradition of the early visit and prolonged presence of S. Peter at Rome.

The first of these in the middle of the second century was drawn up, as far as Eleutherius, A.D. 177–90 by Hegesippus, a Hebrew Christian. Eusebius is our authority for this. This list, however, has not come down to us. It is, however, probable that it was the basis, as far as it went, of the list drawn up by Irenæus circa A.D. 180–90. This is the earliest catalogue of the Roman Bishops which we possess. Irenæus, after stating that the Roman Church was founded by the Apostles Peter and Paul, adds that they entrusted the office of the Episcopate to Linus.

In the Armenian version of the Chronicles of Eusebius, the only version in which we possess this Eusebian Chronicle, Peter appears at the head of the list of Roman Bishops, and twenty years is given as the duration of his government of the Church. Linus is stated to have been his successor. In the list of S. Jerome a similar order is preserved—with the slight difference of twenty-five years instead of twenty as the duration of S. Peter’s rule. The deduction which naturally follows these entries in the two lists has been already suggested. The Liberian Catalogue, compiled circa A.D. 354, places S. Peter at the head of the Roman Bishops—giving twenty-five years as the duration of his government. Linus follows here.

The Liberian Catalogue was the basis of the great historical work now generally known as the “Liber Pontificalis,” which in its notices of the early Popes embodies the whole of the Liberian Catalogue—only giving fresh details. The “Liber Pontificalis” in its first portion in its present form is traced back to the earlier years of the sixth century.

The traditional notices of the early presence of S. Peter in Rome are many and various. Taken by themselves they are, no doubt, not convincing—some of them ranking as purely legendary—though we recognize even in these “purely legendary” notices an historical foundation; but taken together they constitute an argument of no little weight.

Among the “purely legendary” we have touched upon the memories which hang round the house of Pudens, and the church which in very early times arose on its site.[5] Of far greater historical value are the memories which belong to the Catacomb of Priscilla, memories which recent discoveries in that most ancient cemetery go far to lift many of the old traditions into the realm of serious history.

The historical fact of the burial (depositio) of some ten or eleven of the first Bishops round the sacred tomb of the Apostle S. Peter (juxta corpus beati Petri in Vaticano), gives additional colour to the tradition of the immemorial reverence which from the earliest times of the Church of Rome encircles the memory of S. Peter.

From the third century onward we find the Roman Bishops claiming as their proudest title to honour their position as successors of S. Peter. In all the controversies which subsequently arose between Rome and the East this position was never questioned. Duchesne, in his last great work,[6] ever careful and scholarly, does not hesitate to term the “Church of Rome” (he is dwelling on its historical aspect) the “Church of S. Peter.”

This study on the work of S. Peter in the matter of laying the early stories of the great Church which after the fall of Jerusalem in A.D. 70 indisputably became the metropolis of Christianity, has been necessarily somewhat long—the question is one of the highest importance to the historian of ecclesiastical history. Was this lofty claim of the long line of Bishops of Rome to be the successors of S. Peter, ever one of their chief titles to honour, based on historic evidence, or was it simply an invention of a later age?