At the beginning of the third century, under the rule of Caracalla and Elagabalus, the Church enjoyed nearly thirty years of peace, interrupted only by the short persecution of Maximus, and by occasional outbreaks of popular hostility here and there.[148]
In 249 the "days of terror" returned, and continued fiercer than ever under the rules of Decius, Gallus, and Valerianus. The last persecution, that of Diocletian and his colleagues, was the longest and most cruel of all. For the space of ten years not a day of mercy shone over the ecclesia fidelium. The historian Eusebius, an eye-witness, says that when the persecutors became tired of bloodshed, they contrived a new form of cruelty. They put out the right eyes of the confessors, cut the tendon of their left legs, and then sent them to the mines, lame, half blind, half starved, and flogged nearly to death. In book VIII., chapter 12, the historian says that the number of sufferers was so great that no account could be kept of them in the archives of the Church. The memory of this decade of horrors has never died out in Rome. We have still a local tradition, not altogether unfounded, of ten thousand Christians who were condemned to quarry materials for Diocletian's Baths, and who were put to death after the dedication of the building.
Towards the end of 306, Maxentius stopped the persecution, but the true era of peace did not begin before 312, which is the date of Constantine's famous "edict of Milan," granting to the Church liberty and free possession of her places of worship and cemeteries forever.
The events of which I have given a summary sketch are beautifully illustrated by the discoveries which have been made in early Christian cemeteries, from May 31, 1578, which is the date of the discovery of the first catacomb, to the present day.
From the time of the apostles to the first persecution of Domitian, Christian tombs, whether above or below ground, were built with perfect impunity and in defiance of public opinion. We have been accustomed to consider the catacombs of Rome as crypts plunged in total darkness, and penetrating the bowels of the earth at unfathomable depths. This is, in a certain measure, the case with those catacombs, or sections of catacombs, which were excavated in times of persecution; but not with those belonging to the first century. The cemetery of these members of Domitian's family who had embraced the gospel—such as Flavius Clemens, Flavia Domitilla, Plautilla, Petronilla, and others—reveals a bold example of publicity.
The entrance to the crypt, discovered in 1714 and again in 1865, near the farmhouse of Tor Marancia, at the first milestone of the Via Ardeatina, is hewn out of a perpendicular cliff, which is conspicuous from the high road (the modern Via delle Sette Chiese). The crypt is approached through a vestibule, which was richly decorated with terra-cotta carvings, and, on the frieze, a monumental inscription enclosed by an elaborate frame. No pagan mausolea of the Via Appia or the Via Latina show a greater sense of security or are placed more conspicuously than this early Christian tomb. The frescoes on the ceiling of the vestibule, representing biblical scenes, such as Daniel in the lions' den, the history of Jonah, etc., were exposed to daylight, and through the open door could be seen by the passer. No precaution was taken to conceal these symbolic scenes from profane or hostile eyes. We regret the loss of the inscription above the entrance, which, besides the name of the owner of the crypt, probably contained the lex monumenti, and a formula specifying the religion of those buried within. In this very catacomb, a few steps from the vestibule, an inscription has been found, in which a Marcus Aurelius Restitutus declares that he has built a tomb for himself and his relatives (sibi et suis), provided they were believers in Christ (fidentes in Domino). Another tombstone, discovered in 1864, in the Villa Patrizi, near the catacombs of Nicomedes, states that none might be buried in the tomb to which it was attached except those who belonged to the creed (pertinentes ad religionem) of the founder.
Entrance to the Crypt of the Flavians.
The time soon came when these frank avowals of Christianity were either impossible or extremely hazardous; and although legally a tomb continued to be a locus religiosus, no matter what the creed of the deceased had been, a vague sense of anxiety was felt by the Church, lest even these last refuges should be violated by the mob and its leaders. Hence the extraordinary development which underground cemeteries underwent towards the end of the first and the beginning of the second century. These catacombs were considered by the law to be the property of the citizen who owned the ground above, and who either excavated them at his own cost, or gave the privilege of doing so to the Church. This is the reason why the names of our oldest suburban cemeteries are derived, not from the illustrious saints buried in them, but from the owner of the property under which the catacomb was first excavated. Balbina, Callixtus, Domitilla were never laid to rest in the catacombs which bear their names. Prætextatus, Apronianus, the Jordans, Novella, Pontianus, and Maximus, after whom other cemeteries were named, are all totally unknown persons. When these cemeteries became places of worship and pilgrimage, after the Peace of Constantine, the old names which had sheltered them from the violence of persecutors were abandoned, and replaced by those of local martyrs. Thus the catacomb of Domitilla became that of Nereus and Achilleus; that of Balbina was named for S. Mark; that of Callixtus for SS. Sixtus and Cæcilia; and that of Maximus for S. Felicitas.