In the ninth century, when the great translation of the precious remains of the saints and martyrs from their old resting-places in the catacombs outside Rome to securer resting-places within the city, took place, the Cemetery of Priscilla in common with the other God's acres we term catacombs was despoiled of many of its sacred deposits. In common too with the other catacombs, S. Priscilla at once ceased to be an object of reverent pilgrimage, and was quickly forgotten, and remained forgotten for many hundred years. It has only been explored in the last thirty or forty years, and not yet by any means exhaustively. It was only in A.D. 1887 that the crypt of the noble family of the Acilii Glabriones was discovered.
Quite recent investigation and discoveries have now satisfied Marucchi, the last explorer and student of the catacombs, long the assistant and disciple of De Rossi, that the Cemetery of Priscilla must be identified as the locality of the preaching and teaching of S. Peter—so often alluded to as the "Sedes ubi prius sedit sanctus Petrus"—that the Cemetery of S. Priscilla was the "Cœmeterium ad Nymphas beati Petri ubi baptizaverat." Marucchi has with infinite pains and scholarship proved his point, and has shown to a wondering group of interested scholars the very pools still filled with water in the dark crypts of S. Priscilla in which the great apostle probably baptized the first converts to the religion of his Master, for whom in the end he witnessed his noble confession on the Vatican Hill in the reign of the Emperor Nero.
The Cemetery of Priscilla, as at present explored, consists roughly of two vast galleries; many of its crypts and corridors dating from the first and second centuries. Their age is accurately determined, among other well-known signs, by the character of the decorative work and by the nature and phraseology of the inscriptions; the existence of the many Greek epitaphs is one other sure proof of the very early date of the interments.
From the notices in the Pilgrim Itineraries, notwithstanding their present often ruined and desolate condition, a good many of the original tombs of the more famous confessors and saints can be fairly identified. We will indicate a few of the
