According to Tertullian, writing c. 199, the Roman Church claimed that Clement was ordained by St. Peter (De Praescript., xxxii), and St. Jerome tells us that in his time "most of the Latins" held that Clement was the immediate successor of the Apostle (De viris illustr., xv). St. Jerome himself in several other places follows this opinion, but here he correctly states that Clement was the fourth pope. The early evidence shows great variety. The most ancient list of popes is one made by Hegesippus in the time of Pope Anicetus, c. 160 (Harnack ascribes it to an unknown author under Soter, c. 170), cited by St. Epiphanius (Haer., xxvii, 6). It seems to have been used by St. Irenaeus (Haer., III, iii), by Julius Africanus, who composed a chronography in 222, by the third—or fourth-century author of a Latin poem against Marcion, and by Hippolytus, who see chronology extends to 234 and is probably found in the "Liberian Catalogue" of 354. That catalogue was itself adopted in the " Liber Pontificalis ". Eusebius in his chronicle and history used Africanus; in the latter he slightly corrected the dates. St. Jerome's chronicle is a translation of Eusebius's, and is our principal means for restoring the lost Greek of the latter; the Armenian version and Coptic epitomes of it are not to be depended on. The varieties of order are as follows: Linus, Cletus, Clemens (Hegesippus, ap. Epiphanium, Canon of Mass). Linus, Anencletus, Clemens (Irenaeus, Africanus ap. Eusebium). Linus, Anacletus, Clemens (Jerome). Linus, Cletus, Anacletus, Clemens (Poem against Marcion), Linus, Clemens, Cletus, Anacletus [Hippolytus (?), "Liberian Catal."—"Liber. Pont."]. Linus, Clemens, Anacletus (Optatus, Augustine).
At the present time no critic doubts that Cletus, Anacletus, Anencletus, are the same person. Anacletus is a Latin error; Cletus is a shortened (and more Christian) form of Anencletus. Lightfoot thought that the transposition of Clement in the "Liberian Catalogue" was a mere accident, like the similar error "Anicetus, Pius" for "Pius Anicetus", further on in the same list. But it may have been a deliberate alteration by Hippolytus, on the ground of the tradition mentioned by Tertullian. St. Irenaeus (III, iii) tells us that Clement "saw the blessed Apostles and conversed with them, and had yet ringing in his ears the preaching of the Apostles and had their tradition before his eyes, and not he only for many were then surviving who had been taught y the Apostles ". Similarly Epiphanius tells us (from Hegesippus) that Clement was a contemporary of Peter and Paul. Now Linus and Cletus had each twelve years attributed to them in the list. If Hippolytus found Cletus doubled by an error.(Cletus XII, Anacletus XII), the accession of Clement would appear to be thirty-six years after the death of the Apostles. As this would make it almost impossible for Clement to have been their contemporary, it may have caused Hippolytus to shift him to an earlier position. Further, St. Epiphanius says (loc. cit. ): " Whether he received episcopal ordination from Peter in the life-time of the Apostles, and declined the office, for he says in one of his epistles 'I retire, I depart, let the people of God be in peace', (for we have found this set down in certain Memoirs), or whether he was appointed by the Bishop Cletus after he had succeeded the Apostles, we do not clearly know." The "Memoirs" were certainly those of Hegesippus. It seems unlikely that he is appealed to only for the quotation from the Epistle, c. liv; probably Epiphanius means that Hegesippus stated that Clement had been ordained by Peter and declined to be bishop, but twenty-four years later really exercised the office for nine years. Epiphanius could not reconcile these two facts; Hippolytus seems to have rejected the latter.
The date intended by Hegesippus is not hard to restore. Epiphanius implies that he placed the martyrdom of the Apostles in the twelfth year of Nero. Africanus calculated the fourteenth year (for he had attributed one year too little to the reigns of Caligula and Claudius), and added the imperial date for the accession of each pope; but having two years too few up to Anicetus he could not get the intervals to tally with the years of episcopate given by Hegesippus. He had a parallel difficulty in his list of the Alexandrian bishops. Hegesippus Africanus (from Eusebius) Interval Real Dates AD Linus 12 Nero 14 12 Nero 12 66 Cletus 12 Titus 2 12 Vesp 10 78 Clemens 9 Dom 12 (7) Dom 10 80 Euaristus 8 Trajan 2 (10) Tajan 2 99 Alexander 10 Trajan 12 10 Trajan 10 107 Sixtus 10 Hadrian 3 (9) Hadrian 1 117 Telesphorus 11 Hadrian 12 (10) Hadrian 11 127 Hyginus 4 Anton 1 4 Anton 1 138 Pius 15 Anton 5 15 Anton 5 142 Anicetus Anton 20 Anton 20 157
If we start, as Hegesippus intended, with Nero 12 (see last column), the sum of his years brings us right for the last three popes. But Africanus has started two years wrong, and in order to get right at Hyginus he has to allow one year too little to each of the preceding popes, Sixtus and Telesphorus. But there is one inharmonious date, Trajan 2, which gives seven and ten years to Clement and Euaristus instead of nine and eight. Evidently he felt bound to insert a traditional date—and in fact we see that Trajan 2 was the date intended by Hegesippus. Now we know that Hegesippus spoke about Clement's acquaintance with the Apostles, and said nothing about any other pope until Telesphorus, "who was a glorious martyr." It is not surprising, then, to find that Africanus had, besides the lengths of episcopate, two fixed dates from Hegesippus, those of the death of Clement in the second year of Trajan, and of the martyrdom of Telesphorus in the first year of Antoninus Pius. We may take it, therefore, that about 160 the death of St. Clement was believed to have been in 99.
Identity Origen identifies Pope Clement with St. Paul's fellow-labourer, Phil., iv, 3, and 80 do Eusebius, Epiphanius, and Jerome—but this Clement was probably a Philippian. In the middle of the nineteenth century it was the custom to identity the pope with the consul of 95, T. Flavius Clemens, who was martyred by his first cousin, the Emperor Domitian, at the end of his consulship. But the ancients never suggest this, and the pope is said to have lived on till the reign of Trajan. It is unlikely that he was a member of the imperial family. The continual use of the Old Testament in his Epistle has suggested to Lightfoot, Funk, Nestle, and others that he was of Jewish origin. Probably he was a freedman or son of a freedman of the emperor's household, which included thousands or tens of thousands. We know that there were Christians in the household of Nero (Phil., iv, 22). It is highly probable that the bearers of Clement's letter, Claudius Ephebus and Valerius Vito, were of this number, for the names Claudius and Valerius occur with great frequency in inscriptions among the freedmen of the Emperor Claudius (and his two predecessors of the same gens) and his wife Valeria Messalina. The two messengers are described as "faithful and prudent men, who have walked among us from youth unto old age unblameably ", thus they were probably already Christians and living in Rome before the death of the Apostles about thirty years earlier. The Prefect of Rome during Nero's persecution was Titus Flavius Sabinus, elder brother of the Emperor Vespasian, and father of the martyred Clemens. Flavia Domitilla, wife of the Martyr, was a granddaughter of Vespasian, and niece of Titus and Domitian; she may have died a martyr to the rigours of her banishment The catacomb of Domitilla is shown by existing inscriptions to have been founded by her. Whether she is distinct from another Flavia Domitilla, who is styled "Virgin and Martyr", is uncertain. (See FLAVIA DOMITILLA and NEREUS AND ACHILLEUS) The consul and his wife had two sons Vespasian and Domitian, who had Quintilian for their tutor. Of their life nothing is known. The elder brother of the martyr Clemens was T. Flavius Sabinus, consul in 82, put to death by Domitian, whose sister he had married. Pope Clement is rep resented as his son in the Acts of Sts. Nereus and Achilleus, but this would make him too young to have known the Apostles.
Of the life and death of St, Clement nothing is known. The apocryphal Greek Acts of his martyrdom were printed by Cotelier in his "Patres Apost." (1724, I, 808; reprinted in Migne, P. G., II, 617, best edition by Funk, "Patr. Apost.", II, 28). They relate how he converted Theodora, wife of Sisinnius, a courtier of Nerva, and (after miracles) Sisinnius himself and four hundred and twenty-three other persons of rank. Trajan banishes the pope to the Crimea, where he slakes the thirst of two thousand Christian confessors by a miracle. The people of the country are converted, seventy—five churches are built. Trajan, in consequence, orders Clement to be thrown into the sea with an iron anchor. But the tide every year recedes two miles, revealing a Divinely built shrine which contains the martyr's bones. This story is not older than the fourth century. It is known to Gregory of Tours in the sixth. About 868 St. Cyril, when in the Crimea on the way to evangelize the Chazars, dug up some bones in a mound (not in a tomb under the sea), and also an anchor. These were believed to be the relics of St. Clement. They were carried by St. Cyril to Rome, and deposited by Adrian II with those of St. Ignatius of Antioch in the high altar of the basilica of St. Clement in Rome. The history of this translation is evidently quite truthful, but there seems to have been no tradition with regard to the mound, which simply looked a likely place to be a tomb. The anchor appears to be the only evidence of identity but we cannot gather from the account that it belonged to the scattered bones. (See Acta SS., 9 March, II, 20.) St. Clement is first mentioned as a martyr by Rufinus (c. 400). Pope Zozimus in a letter to Africa in 417 relates the trial and partial acquittal of the heretic Caelestius in the basilica of St. Clement; the pope had chosen this church because Clement had learned the Faith from St. Peter, and had given his life for it (Ep. ii). He is also called a martyr by the writer known as Praedestinatus (c. 430) and by the Synod of Vaison in 442. Modern critics think it possible that his martyrdom was suggested by a confusion with his namesake, the martyred consul. But the lack of tradition that he was buried in Rome is in favour of his having died in exile.
The church of St. Clement at Rome lies in the valley between the Esquiline and Coelian hills, on the direct road from the Coliseum to the Lateran. It is now in the hands of the Irish Province of Dominicans. With its atrium, its choir enclosed by a wall, its ambos, it is the most perfect model of an early basilica in Rome, though it was built as late as the first years of the twelfth century by Paschal II, after the destruction of this portion of the city by the Normans under Robert Guiscard. Paschal II followed the lines of an earlier church, on a rather smaller scale, and employed some of its materials and fittings The marble wall of the present choir is of the date of John II (533-5). In 1858 the older church was unearthed, below the present building, by the Prior Father Mulooly, O. P. Still lower were found chambers of imperial date and walls of the Republican period. The lower church was built under Constantine (d. 337) or not much later. St. Jerome implies that it was not new in his time: "nominis eius [Clementis] memoriam usque hodie Romae exstructa ecclesia custodit" (De viris illustr., xv). It is mentioned in inscriptions of Damasus (d. 383) and Siricius (d. 398). De Rossi thought the lowest chambers belonged to the house of Clement, and that the room immediately under the altar was probably the original <memoria> of the saint. These chambers communicate with a shrine of Mithras, which lies beyond the apse of the church, on the lowest level. De Rossi supposed this to be a Christian chapel purposely polluted by the authorities during the last persecution. Lightfoot has suggested that the rooms may have belonged to the house of T. Flavius Clemens the consul, being later mistaken for the dwelling of the pope; but this seems quite gratuitous. In the sanctuary of Mithras a statue of the Good Shepherd was found.