Pontian and Hippolytus.
From Catholic Encyclopedia 1913:
Martyr, presbyter and antipope; date of birth unknown; d. about 236. Until the publication in 1851 of the recently discovered "Philosophumena", it was impossible to obtain any definite authentic facts concerning Hippolytus of Rome and his life from the conflicting statements about him, as follows:
* Eusebius says that he was bishop of a church somewhere and enumerates several of his writings (Hist. eccl., VI, xx, 22).
* St. Jerome likewise describes him as the bishop of an unknown see, gives a longer list of his writings, and says of one of his homilies that he delivered it in the presence of Origen, to whom he made direct reference (De viris illustribus, cap. 1xi).
* The Chronography of 354, in the list of popes, mentions Bishop Pontianus and the presbyter Hippolytus as being banished to the island of Sardinia in the year 235; the Roman Calendar in the same collection records under 13 August the feast of Hippolytus on the Via Tiburtina and Pontianus in the catacomb of Callistus (ed. Mommsen in "Mon. Germ. Hist.: auctores antiquissimi", IX, 72, 74).
* According to the inscription over the grave of Hippolytus composed by Pope Damasus, he was a follower of the Novatian schism while a presbyter, but before his death exhorted his followers to become reconciled with the Catholic Church (Ihm, "Damasi epigrammata", Leipzig, 1895, 42, n.37).
* Prudentius wrote a hymn on the martyr Hippolytus ("Peristephanon", hymn XI, in P.L., LX, 530 sqq.), in which he places the scene of the martyrdom at Ostia or Porto, and describes Hippolytus as being torn to pieces by wild horses, evidently a reminiscence of the ancient Hippolytus, son of Theseus.
* Later Greek authors (e. g. Georgius Syncellus., ed. Bonn, 1829, 674 sqq.; Nicephorus Callistus, "Hist. eccl.", IV, xxxi) do not give much more information than Eusebius and Jerome; some of them call him Bishop of Rome, others Bishop of Porto. According to Photius (Bibliotheca, codex 121), he was a disciple of St. Irenaeus. Oriental writers, as well as Pope Gelasius, place the See of Hippolytus at Bostra, the chief city of the Arabs.
* Several later legends of martyrs speak of Hippolytus in various connections. That of St. Laurence refers to him as the officer appointed to guard the blessed deacon, who was converted, together with his entire household, and killed by wild horses (Acta SS., August, III, 13-14; Surius, "De probatis Sanctorum historiis", IV, Cologne, 1573, 581 sqq.). A legend of Porto identifies him with the martyr Nonnus and gives an account of his martyrdom with others of the same city (Acta SS., August, IV, 506; P.G., X, 545-48).
* A monument of importance is the large fragment of a marble statue of the saint discovered in 1551 which underwent restoration (the upper part of the body and the head being new), and is now preserved in the Lateran museum; the paschal cycle computed by Hippolytus and a list of his writings are engraved on the sides of the chair on which the figure of Hippolytus is seated; the monument dates from the third century (Kraus, "Realencyklopädie der christlichen Altertumer", 661 sqq.).
* The topographies of the graves of the Roman martyrs place the grave of Hippolytus in the cemetery on the Via Tiburtina named after him, mention the basilica erected there, and give some legendary details concerning him. (De Rossi, "Roma sotterranea", I, 178-79); the burial vault of the sainted confessor was unearthed by De Rossi (Bullettino di archeologia cristiana, 1882, 9-76).
The discovery of the "Philosophumean" has now made it possible to clear up the most important period of the life of St. Hippolytus through his own evidence, and at the same time to test and correct the conflicting accounts contained in the old authorities. We proceed on the assumption that Hippolytus was really the author of the aforesaid work, an hypothesis almost universally accepted by investigators to-day.
Hippolytus was a presbyter of the Church of Rome at the beginning of the third century. There is no difficulty in admitting that he could have been a disciple of St Irenaeus either in Rome or Lyons. It is equally possible that Origen heard a homily by Hippolytus when he went to Rome about the year 212. In the reigh of Pope Zephyrinus (198-217) he came into conflict with that pontiff and with the majority of the Church of Rome, primarily on account of the christological opinions which for some time had been causing controversies in Rome. Hippolytus had combated the heresy of Theodotion and the Alogi; in like fashion he opposed the false doctrines of Noetus, of Epigonus, of Cleomenes, and of Sabellius, who emphasized the unity of God too one-sidedly (Monarchians) and saw in the concepts of the Father and the Son merely manifestations (modi) of the Divine Nature (Modalism, Sabellianism). Hippolytus, on the contrary, stood uncompromisingly for a real difference between the Son (Logos) and the Father, but so as to represent the Former as a Divine Person almost completely separate from God (Ditheism) and at the same time altogether subordinate to the Father (Subordinationism). As the heresy in the doctrine of the Modalists was not at first clearly apparent, Pope Zephyrinus declined to give a decision. For this Hippolytus gravely censured him, representing him as an incompetent man, unworthy to rule the Church of Rome and as a tool in the hands of the ambitious and intriguing deacon Callistus, whose early life is maliciously depicted (Philosophumena, IX, xi-xii). Consequently when Callistus was elected pope (217-218) on the death of Zephyrinus, Hippolytus immediately left the communion of the Roman Church and had himself elected antipope by his small band of followers. These he calls the Catholic Church and himself successor to the Apostles, terming the great majority of Roman Christians the School of Callistus. He accuses Callistus of having fallen first into the heresy of Theodotus, then into that of Sabellius; also of having through avarice degraded ecclesiastical, and especially the penitential, discipline to a disgraceful laxity. These reproaches were altogether unjustified. Hippolytus himself advocated an excessive rigorism. He continued in opposition as antipope throughout the reigns of the two immediate successors of Callistus, Urban (222 or 223 to 230) and Pontius (230-35), and during this period, probably during the pontificate of Pontianus, he wrote the "Philosophumena". He was banished to the unhealthful island (insula nociva) of Sardinia at the same time as Pontianus; and shortly before this, or soon afterward, he became reconciled with the legitimate bishop and the Church of Rome. For, after both exiles had died on the island of Sardinia, their mortal remains were brought back to Rome on the same day, 13 August (either 236 or one of the following years), and solemnly interred, Pontianus in the papal vault in the catacomb of Callistus and Hippolytus in a spot on the Via Tiburtina. Both were equally revered as martyrs by the Roman Church: certain proof that Hippolytus had made his peace with that Church before his death. With his death the schism must have come to a speedy end, which accounts for its identification with the Novatian schism at the end of the fourth century, as we learn from the inscription by Damasus.
The fact that Hippolytus was a schismatic Bishop of Rome and yet was held in high honour afterwards both as martyr and theologian, explains why as early as the fourth century nothing was known as to his see, for he was not on the list of the Roman bishops. The theory championed by Lightfoot (see below), that he was actually Bishop of Porto but with his official residence in Rome, is untenable.
This statement, made by a few authorities, results from a confusion with a martyr of Porto, due perhaps to a legendary account of his martyrdom. Moreover De Rossi's hypothesis, based on the inscription by Damasus, that Hippolytus returned from exile, and subsequently became an adherent of Novatian, his reconciliation with the Roman Church not being effected until just before his martyrdom under the Emperor Valerian (253-60), is incompatible with the supposition that he is the author of the "Philosophumena." The feast of St. Hippolytus is kept on 13 August, a date assigned in accordance with the legend of St. Laurence; that of Hippolytus of Porto is celebrated on 22 August....
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St. Hippolytus, Roman priest13-Aug
Pontian and Hippolytus.