It is hard to reduce the great building in imagination to the little basilica built by Constantine the sentimentalist, on the site of Nero's circus; built by some other man perhaps, for no one knows surely; but a little church, at best, compared with many of those which Saint Peter's dwarfs to insignificance now. To remind men of him the effigy of that same Constantine sits on a marble charger there, on the left, beneath the portico, behind the great iron gate, with head thrown back, and lifted hand, and marble eyes gazing ever on the Cross. Some say that he really embraced Christianity only when dying. The names of the churches founded by him in Constantinople are all sentimentally ambiguous, from Sophia, 'wisdom,' to Anastasia, 'resurrection,' or revival, and hence 'spring.' It is strange that the places of worship built by him in Rome, if they were really his work, should bear such exceedingly definite designations and direct dedications as Saint Peter's, Saint John's, Saint Paul's and the Church of the Holy Cross. At all events, whether he believed much or little, Christianity owes him much, and romance is indebted to him for almost as much more. But for Constantine there might have been no Charlemagne, no Holy Roman Empire.
In old times criminals of low degree used to be executed on the Esquiline, and were buried there, unburned, unless their bodies were left to wither upon the cross in wind and sun, as generally happened. The place was the hideous feeding ground of wild dogs and carrion birds, and witches went there by night to perform their horrid rites. It was there that Canidia and her companion buried a living boy up to the neck that they might make philters of his vitals. Everyone must remember the end of Horace's imprecation:—
"... insepulta membra different lupi,
Et Esquilinæ alites."
Then came Mæcenas and redeemed all that land; turned it into a garden, and beautified it; uprooted the mouldering crosses, whereon still hung the bones of dead slaves, and set out trees in their stead; piled thirty feet of clean earth upon the shallow graves of executed murderers and of generations of thieves, and planted shrubbery and flowers, and made walks and paths and shady places.
Therefore it happened that the southern spur of the Janiculum became after that time a place of execution and cruel death. The city had never grown much on that side of the Tiber,—that is to say, on the right bank,—and the southern end of the long hill was a wilderness of sand and brushwood.
MAMERTINE PRISON
In the deep Mamertine prison, behind the Tabulary of the Forum, it was customary to put to death only political misdoers, and their bodies were then thrown down the Gemonian steps. 'Vixerunt,' said Cicero, grimly, when Catiline's fellow conspirators lay there dead; and perhaps the sword that was to fall upon his own neck was even then forged. The prison is still intact. The blood of Vercingetorix and of Sejanus is on the rocky floor. Men say that Saint Peter was imprisoned here. But because he was not of high degree Nero's executioners led him out across the Forum and over the Sublician bridge, up to the heights of Janiculum. He was then very old and weak, so that he could not carry his cross, as condemned men were made to do. When they had climbed more than half-way up the height, seeing that he could not walk much farther, they crucified him. He said that he was not worthy to suffer as the Lord had suffered, and begged them to plant his cross with the head downward in the deep yellow sand. The executioners did so. The Christians who had followed were not many, and they stood apart weeping.
When he was dead, after much torment, and the sentinel soldier had gone away, they took the holy body, and carried it along the hillside, and buried it at night close against the long wall of Nero's circus, on the north side, near the place where they buried the martyrs killed daily by Nero's wild beasts and in other cruel ways. They marked the spot, and went there often to pray. Lately certain learned men have said that he was crucified in the circus itself, but the evidence is slight compared with the undoubted weight of a very ancient tradition, and turns upon the translation of a single word.
Within two years Nero fell and perished miserably, scarcely able to take his own life to escape being beaten to death in the Forum. In a little more than a year there were four emperors in Rome; Galba, Otho and Vitellius followed one another quickly; then came Vespasian, and then Titus, with his wars in Palestine, and then Domitian. At last, nearly thirty years after the apostle had died on the Janiculum, there was a bishop called Anacletus, who had been ordained priest by Saint Peter himself. The times being quieter then, this Anacletus built a little oratory, a very small chapel, in which three or four persons could kneel and pray over the grave. And that was the beginning of Saint Peter's Church. But Anacletus died a martyr too, and the bishops after him all perished in the same way up to Eutichianus, whose name means something like 'the fortunate one' in barbarous Greek-Latin, and who was indeed fortunate, for he died a natural death. But in the mean time certain Greeks had tried to steal the holy body, so that the Roman Christians carried it away for nineteen months to the Catacombs of Saint Sebastian, after which they brought it back again and laid it in its place. And again after that, when the new circus was built by Elagabalus, they took it once more to the same catacombs, where it remained in safety for a long time.