Pope Saint Soter: The Twelfth Pope, the Charity of Rome, and a Thank-You Letter That Survived

The twelfth in a series on the popes.

When Anicetus, the eleventh pope, received Polycarp of Smyrna and let the Easter question stand in peace, the early papacy gave us its first real scene. His successor gives us something almost as rare and far less dramatic: a thank-you note. Soter, the twelfth pope, is known to history almost entirely because a bishop in Greece wrote to Rome to acknowledge a gift of money—and because Eusebius, a century and a half later, thought the letter worth copying out. That may sound like thin material for a biography, and it is. But the letter happens to be one of the most revealing documents of the second-century Church, and what it reveals is not a doctrine or a controversy but a habit: the Roman church, from the beginning, paying for the relief of Christians it had never met, and its bishop writing to them “as a loving father his children.” Some popes are remembered for what they defined. Soter is remembered for what Rome did with its money.

This is the twelfth entry in my series on the popes, following Peter, Linus, Anacletus, Clement, Evaristus, Alexander I, Sixtus I, Telesphorus, Hyginus, Pius I, and Anicetus. The pattern of these entries will be familiar by now: a secure place in the succession, a fog of dates, a few late legends to be cleared away, and—if we are fortunate—one piece of genuine early evidence that lets us see something real. For Soter the genuine piece is the Corinthian letter, and it deserves to be read slowly.

A Name in the List

The earliest witness is, as always in this stretch of the series, Irenaeus of Lyons. Writing around AD 180 in his Adversus Haereses (Against Heresies), he set out the Roman succession as a public, checkable rebuttal of the Gnostic claim to a secret tradition, and Soter holds his place in it without ceremony:

To this Clement there succeeded Evaristus. Alexander followed Evaristus; then, sixth from the apostles, Sixtus was appointed; after him, Telephorus, who was gloriously martyred; then Hyginus; after him, Pius; then after him, Anicetus. Soter having succeeded Anicetus, Eleutherius does now, in the twelfth place from the apostles, hold the inheritance of the episcopate.⁠¹

Note what that sentence does. It names Soter as Anicetus’s successor and then steps past him to the bishop reigning as Irenaeus wrote—Eleutherius, “in the twelfth place from the apostles.” Irenaeus counts the line from Linus, with Peter standing at its head as founder rather than as first bishop; on that reckoning Eleutherius is twelfth and Soter eleventh. Counting Peter himself as the first pope, as the modern Catholic convention does and as this series does, Soter is the twelfth. The two numbers describe the same fixed position in the same undisputed line.⁠²

A second, independent witness saw Soter’s Rome with his own eyes. Hegesippus, the traveling chronicler whose visit to the capital began under Anicetus, marks the transition in a fragment Eusebius preserves: “And when I had come to Rome I remained there until Anicetus, whose deacon was Eleutherus. And Anicetus was succeeded by Soter, and he by Eleutherus.”⁠³ One sentence, three pontificates—and a contemporary who lived in Rome through the change of reigns. By the evidentiary standards of the second century, Soter’s place in the line is about as secure as a historical fact of this period can be.

The Dates We Cannot Quite Fix

Eusebius supplies the chronological frame. “In the eighth year of the above-mentioned reign”—that of Marcus Aurelius, whom Eusebius calls Antoninus Verus—“Soter succeeded Anicetus as bishop of the church of Rome, after the latter had held office eleven years in all.”⁠⁴ The eighth year of Marcus Aurelius runs 168–169. At the close of the same book Eusebius notes simply that “about this time also Soter, bishop of the Church of Rome, departed this life,” and he opens the next book with the arithmetic: “Soter, bishop of the church of Rome, died after an episcopate of eight years, and was succeeded by Eleutherus, the twelfth from the apostles.”⁠⁵

The conventional dates, c. 166–175, do not quite match Eusebius’s own synchronisms, and the honest course is to say so rather than smooth it over. Eusebius’s figures—accession 168/9, eight years—would end the reign around 176/7; the conventional range leans instead on the chronicle tradition and on working backward from the one hard anchor in this whole stretch of papal history, Victor’s accession in the tenth year of Commodus (189). The Liber Pontificalis, the sixth-century papal chronicle, gives Soter nine years, six months, and twenty-one days, and then dates the reign by a pair of consular years (162–170) that fit no reconstruction at all; its entry also assigns him to the reign of “Severus,” which Louise Ropes Loomis, the chronicle’s English translator, corrects in a dry footnote: “This should be Verus.”⁠⁶ Reference works split the difference—some print 166–174, some 166–175. What can be said with confidence is the shape: Soter took office in the late 160s and died in the mid-170s, after roughly eight or nine years.⁠⁷

The Campanian from Fondi

The Liber Pontificalis opens its entry with the biographical formula it applies to every early pope: “Soter, by nationality a Campanian, son of Concordius, from the city of Fundi.”⁠⁸ Fondi—the modern town still bears the name—sits on the Appian Way between Rome and Naples, and an Italian pope from a coastal Campanian town is entirely plausible, though the chronicle’s specifics can never be confirmed against earlier evidence. Fondi, for its part, has kept a local devotion to its claimed native son into modern times.

The chronicle then credits Soter with a decree: “that no monk should touch the consecrated altar cloth or should offer incense in the holy church.” The notice carries the usual anachronism warning—organized monasticism did not exist in the 160s, a point the manuscript tradition itself seems to have felt, since several copies substitute “nun” for “monk,” influenced (Loomis suggests) by a similar decree attributed to the fifth-century pope Boniface I.⁠⁹ As with the decrees hung on Alexander and Anicetus before him, the Liber Pontificalis is projecting the liturgical discipline of its own era backward onto an early name. Strip the decree away, and what the chronicle preserves about Soter is a hometown and a father’s name—no more.

The Letter from Corinth

Everything substantial we know about Soter comes from one document, and it is a document of a kind we have not yet met in this series: a contemporary letter to Rome, thanking the Roman church for what it had actually done. The author is Dionysius, bishop of Corinth, one of the most prolific correspondents of the second-century Church; Eusebius catalogues his letters to churches from Sparta to Pontus. Among them, Eusebius says, “there is extant also another epistle written by Dionysius to the Romans, and addressed to Soter, who was bishop at that time,” and he quotes it because it “commends the practice of the Romans which has been retained down to the persecution in our own days.” The passage he copies out deserves quotation in full:

For from the beginning it has been your practice to do good to all the brethren in various ways, and to send contributions to many churches in every city. Thus relieving the want of the needy, and making provision for the brethren in the mines by the gifts which you have sent from the beginning, you Romans keep up the hereditary customs of the Romans, which your blessed bishop Soter has not only maintained, but also added to, furnishing an abundance of supplies to the saints, and encouraging the brethren from abroad with blessed words, as a loving father his children.⁠¹⁰

Read that slowly, because nearly every clause carries weight. “From the beginning”: Dionysius, writing in the early 170s, describes the Roman church’s financial support of other churches not as Soter’s innovation but as an inherited practice already old enough to be called original. “To many churches in every city”: the charity is not occasional but systematic, and its reach is empire-wide. “The brethren in the mines”: Rome’s money is going to Christians condemned to penal labor—the damnatio ad metalla that was among the harshest sentences Roman law imposed, and one we will meet again, vividly, in the life of Callixtus. And “your blessed bishop Soter has not only maintained, but also added to”: whatever else the twelfth pope did, a contemporary bishop on the receiving end judged that he had enlarged an already generous tradition, and paired the money with “blessed words”—pastoral encouragement—“as a loving father his children.”

It is worth pausing over how unusual this evidence is. For most early popes we have a name in a list and legends written centuries later. For Soter we have the testimony of a living colleague, in his own words, about conduct from which he had personally benefited. The portrait is slight, but it is real—and the trait it happens to preserve, paternal generosity, is not one a legend-maker would have bothered to invent. Legends supply martyrdoms and decrees. Receipts survive by accident, and are believed for the same reason.

A Letter Read at Sunday Worship

Dionysius’s letter preserves a second detail that historians of the papacy have found even more suggestive than the first. Soter had evidently written to Corinth—the letter accompanied the gift—and Dionysius reports what the Corinthian church did with it:

Today we have passed the Lord’s holy day, in which we have read your epistle. From it, whenever we read it, we shall always be able to draw advice, as also from the former epistle, which was written to us through Clement.⁠¹¹

The Corinthians read Soter’s letter aloud at Sunday worship, and they planned to keep doing so—“whenever we read it”—setting it beside the letter “written to us through Clement,” the epistle we now call 1 Clement, sent from Rome some seventy-five years earlier and treated at length in the fourth entry of this series. The parallel Dionysius draws is deliberate. Corinth kept a small shelf of Roman letters, and it read them in the liturgy, in the slot where Scripture was read, as documents from which the church “shall always be able to draw advice.”

What does that prove about the second-century papacy? Less than the maximalist wants and more than the minimalist concedes—which is, by now, the refrain of this series. It does not prove jurisdiction; nothing in Dionysius suggests Soter commanded Corinth to do anything, and the reverence is freely given, not extracted. But it shows a pattern with only one center. Rome writes to Corinth under Clement; Corinth treasures the letter for three-quarters of a century; Rome writes again under Soter; Corinth adds the new letter to the old and reads both at worship. No other church in the surviving record accumulates this kind of deference. Ignatius of Antioch, two generations earlier, had addressed the Roman church as the one “presiding in love”—and here, under Soter, is what presiding in love looked like in practice: money for the needy, words like a father’s, and letters other churches did not throw away.⁠¹² Eamon Duffy, no maximalist about the early papacy, sets Soter’s alms in precisely this frame: the practical, financial expression of a Roman “care for all the churches” that long predated any developed theory of Roman primacy.⁠¹³

One more fragment of the same letter rewards attention. Dionysius complains that his own letters were being tampered with in transmission: “As the brethren desired me to write epistles, I wrote. And these epistles the apostles of the devil have filled with tares, cutting out some things and adding others. For them a woe is reserved.” And he draws the sobering inference: “It is, therefore, not to be wondered at if some have attempted to adulterate the Lord’s writings also.”⁠¹⁴ Here, in a letter to Pope Soter, is a second-century bishop testifying both to the circulation of Christian texts and to the textual corruption that circulation invited—one of the earliest surviving complaints about the integrity of Christian documents, Scripture included. It is a reminder that the era’s battles over authentic teaching, which this series has traced through the Gnostic crisis, were fought partly at the level of the manuscript.

The Letter We Lost

Soter’s letter itself does not survive—or does it? In the late nineteenth century Adolf von Harnack proposed an elegant identification: the anonymous early homily transmitted under the title Second Epistle of Clement is, he argued, none other than the Roman letter of Soter that Dionysius describes, misfiled in antiquity under Clement’s more famous name. The old Catholic Encyclopedia already reported the theory with appropriate distance—“Harnack and others have attempted to identify it with the so-called ‘Second Epistle of Clement’“—and the distance has only grown since.⁠¹⁵ The difficulty is fatal and has been evident since Philotheos Bryennios published the full text of 2 Clement in 1875, from a codex discovered two years earlier: the document is not a letter at all but a sermon, a hortatory address to a congregation, and its usual scholarly dating (roughly 140–160) centers a generation before Soter’s reign. The identification is now generally abandoned, and 2 Clement is read as what it appears to be—likely the oldest surviving Christian homily outside the New Testament, author unknown.⁠¹⁶ Soter’s letter must be counted among the lost.

A second attributed writing can be dismissed more briskly. A fifth-century heresy catalogue known as Praedestinatus asserts that “holy Soter, pope of the City,” wrote a book against the Montanists—and even has Tertullian writing against Soter in reply, which is chronologically impossible. The work is anonymous, late, and demonstrably careless; no modern scholar treats its notice as evidence for a Soteran treatise. The rising Montanist movement does belong to Soter’s decade, but the Roman engagement with it that we can actually document begins under his successor, Eleutherius, and there we will take up the story.⁠¹⁷

The Martyrdom That Isn’t There

Like nearly all his predecessors, Soter came down through the medieval liturgical books wearing a martyr’s crown—his feast kept on 22 April jointly with the third-century pope Caius, both titled martyrs. The claim has the by-now-familiar defects. No early source records it: not Irenaeus, not Hegesippus, not Eusebius, not even Dionysius, whose letter would have been an odd place to omit a correspondent’s subsequent martyrdom had one occurred. The 1908 Catholic Encyclopedia, having quoted the Corinthian letter, closes its account with a sentence of admirable restraint: “Nothing further is known of this pope.”⁠¹⁸

The post-conciliar Church made the correction official. The commentary accompanying the 1969 reform of the General Roman Calendar concluded that Soter and Caius could by no right be numbered among the martyrs, and the current Martyrologium Romanum commemorates Soter on 22 April without the martyr title—remembering him instead, in a fine touch, for exactly what Dionysius praised: the outstanding charity toward the brethren, the poor, and those condemned to the mines.⁠¹⁹ The Church’s own book of saints now cites the thank-you letter. The earliest Roman burial lists point the same direction: the fourth-century Depositio Martyrum, the oldest martyr-calendar of the Roman church, contains no second-century pope at all—of the popes in this whole stretch of the series, only Callixtus appears in it, and his case we will weigh when we reach him.⁠²⁰

Even Soter’s grave is uncertain. The two recensions of the Liber Pontificalis disagree—one buries him “near the body of the blessed Peter,” the other “in the cemetery of Calistus on the Via Appia”—and the second is impossible as stated, since the cemetery of Callixtus did not yet exist under that name; Loomis judges the Vatican reading “probably the correct one.”⁠²¹ Later Roman tradition has his relics translated in the ninth century and eventually divided among churches in Rome, with a rival tradition claiming a portion for the cathedral of Toledo; none of it can be verified, and none of it matters much. What matters about Soter was never his bones.

Did Rome Have a Pope Yet?

The question that has shadowed this series—whether the mid-second-century Roman church was governed by a monarchical bishop or led by a college of presbyters—was treated at length in the Anicetus entry, and Soter’s reign adds one datum to each side of the scale. For the critical reading: Peter Lampe, the standard modern student of the early Roman community, groups Soter with Anicetus and Eleutherius as transitional figures—men who managed Rome’s external correspondence and its common charity fund without yet wielding the full monarchical authority he thinks arrived only with Victor in the 190s.⁠²² And it is true that the two activities Dionysius attests for Soter—dispensing the common fund and writing pastoral letters abroad—are precisely the functions Lampe assigns to Rome’s “minister of external affairs” before the monarchical office crystallized.

But notice what the letter calls him. Dionysius writes of “your blessed bishop Soter”—one man, named, holding an office, whose personal manner (“as a loving father”) colors the whole church’s action. Whatever the precise constitutional machinery behind him, the Corinthians in the 170s had no difficulty identifying who the bishop of Rome was, and neither did Hegesippus, who lived there. As with Anicetus, the honest position holds both halves: the office was still developing, and the man holding it was real, named, and remembered—a genuine link in a genuine chain.

What We Can Actually Say

Strip Soter to the load-bearing evidence and the result is brief but unusually solid at its center. There was a bishop of Rome named Soter, successor of Anicetus, in office from the late 160s to the mid-170s—attested by Irenaeus within a decade of his death and by Hegesippus, who lived in Rome through his accession. He maintained and enlarged the Roman church’s long-standing practice of sending financial relief to churches across the empire, including to Christians condemned to the mines, and he accompanied the money with a pastoral letter that the church of Corinth read aloud at Sunday worship and shelved beside the epistle of Clement. A contemporary bishop, on the receiving end of his generosity, called him a blessed bishop and compared him to a loving father.

What the evidence does not support is the rest: the martyrdom (no early witness, and the Church’s own calendar reform has dropped it), the decree about monks and altar cloths (an anachronism), the anti-Montanist treatise (a late catalogue’s invention), and the identification of his lost letter with 2 Clement (abandoned). Even his grave cannot be fixed with certainty.

Yet Soter may be the early pope whose surviving portrait is least distorted by what we wish we knew. The evidence for him is one letter, and the letter shows the Roman church doing something it would keep doing for two millennia: collecting money and giving it away, to strangers, systematically, as a matter of inherited identity—“the hereditary customs of the Romans.” Before Rome articulated a theory of its primacy, other churches were already describing its practice, and the practice was charity. The twelfth pope presided over that, added to it, and wrote like a father to Christians he would never meet. There are worse things for the historical record to preserve.

Next in the series: Pope Saint Eleutherius, the deacon who became pope—and the legend of the British king who wrote to him.

Further Reading

For the early papacy generally, the most reliable quick reference remains J. N. D. Kelly and Michael J. Walsh, The Oxford Dictionary of Popes, 2nd ed. (Oxford University Press, 2010), and the most readable honest survey Eamon Duffy, Saints and Sinners: A History of the Popes, 4th ed. (Yale University Press, 2014). Peter Lampe, From Paul to Valentinus: Christians at Rome in the First Two Centuries, trans. Michael Steinhauser (Fortress Press, 2003), is the standard scholarly study of the Roman community in Soter’s century, and Francis A. Sullivan, From Apostles to Bishops: The Development of the Episcopacy in the Early Church (The Newman Press, 2001), the irenic Catholic treatment of the development question. The indispensable primary source is Eusebius of Caesarea, The History of the Church, trans. A. C. McGiffert, in Nicene and Post-Nicene Fathers, 2nd series, vol. 1 (1890), with the Dionysius correspondence at IV.23.

This post is part of an ongoing series on the popes. You can read about Saint Peter, the first pope, Saint Linus, the second pope, Saint Anacletus, the third pope, Saint Clement, the fourth pope, Saint Evaristus, the fifth pope, Saint Alexander I, the sixth pope, Saint Sixtus I, the seventh pope, Saint Telesphorus, the eighth pope, Saint Hyginus, the ninth pope, Saint Pius I, the tenth pope, and Saint Anicetus, the eleventh pope.

Frequently Asked Questions

Who was Pope Saint Soter?

Soter was the twelfth Bishop of Rome counting Peter as first, conventionally dated c. 166–175. Irenaeus of Lyons names him in the Roman succession list around AD 180, and the chronicler Hegesippus, who lived in Rome through his accession, records that “Anicetus was succeeded by Soter.” Nearly everything else we know comes from a surviving letter of Dionysius, bishop of Corinth, which praises the Roman church’s systematic charity to other churches—including Christians condemned to the mines—and singles out Soter for enlarging that tradition and encouraging the brethren “as a loving father his children.”

When did Soter reign as pope?

Roughly c. 166 to c. 175, though the sources do not quite agree. Eusebius dates his accession to the eighth year of Marcus Aurelius (168/9) and gives him an eight-year reign; the conventional range works backward from the firmer date of Victor’s accession in 189. The Liber Pontificalis gives him nine and a half years but attaches consular dates that fit no reconstruction. The reliable shape: he took office in the late 160s and died in the mid-170s.

What is Pope Soter known for?

Charity. The letter of Dionysius of Corinth—our one substantial source—describes the Roman church under Soter sending “contributions to many churches in every city,” relieving the poor and supporting Christians condemned to penal labor in the mines, and it credits Soter personally with maintaining and adding to this inherited practice. Dionysius also records that Soter’s accompanying letter was read aloud at Sunday worship in Corinth alongside the letter of Clement, then some seventy-five years old—striking early evidence of the deference other churches paid to Roman correspondence.

What happened to Soter’s letter to Corinth?

It is lost. The scholar Adolf von Harnack proposed in the late nineteenth century that it survives as the anonymous document called the Second Epistle of Clement, but the identification has been generally abandoned: 2 Clement is a homily rather than a letter, and most scholars date it around 140–160, before Soter’s reign. It is now read as likely the oldest surviving Christian sermon outside the New Testament, by an unknown author.

Was Soter a martyr?

The tradition cannot support the claim. No early source—not Irenaeus, not Hegesippus, not Eusebius, not Dionysius’s contemporary letter—records a martyrdom, and the earliest Roman martyr-calendar, the fourth-century Depositio Martyrum, contains no second-century pope. The commentary behind the 1969 calendar reform concluded there are no grounds for counting Soter (or Caius, with whom he shared a feast) among the martyrs, and the current Martyrologium Romanum commemorates him on 22 April simply as pope, remembered for his charity.

When is Pope Soter’s feast day?

22 April, in the current Martyrologium Romanum—the same date the older calendar kept, though the older books titled him a martyr and paired him with Pope Caius. The 1969 reform removed the joint feast from the General Roman Calendar and dropped the martyr title; the modern commemoration recalls the charity for which Dionysius of Corinth praised him.

Footnotes

1. 1. Irenaeus of Lyons, Against Heresies III.3.3 (c. AD 180), translated in Ante-Nicene Fathers, vol. 1, eds. Alexander Roberts and James Donaldson, rev. A. Cleveland Coxe (Buffalo: Christian Literature Publishing Co., 1885). Available at NewAdvent.org. The ANF text prints "Telephorus" for Telesphorus at this point.

2. 2. On the two counting conventions—Peter as first pope (the modern usage, making Soter twelfth) versus the line counted from Linus (Irenaeus's usage, making Soter eleventh and Eleutherius twelfth)—see the fuller discussion in the Anicetus entry of this series. The conventions differ in arithmetic, not in the order of the line itself.

3. 3. Hegesippus, quoted in Eusebius, Historia Ecclesiastica IV.22.3, trans. A. C. McGiffert, Nicene and Post-Nicene Fathers, 2nd series, vol. 1 (Buffalo: Christian Literature Publishing Co., 1890). Available at NewAdvent.org.

4. 4. Eusebius, Historia Ecclesiastica IV.19.1, trans. McGiffert, NPNF 2nd series, vol. 1; NewAdvent.org. Eusebius's "Antoninus Verus" is Marcus Aurelius; the eighth year of his reign is 168–169.

5. 5. Eusebius, Historia Ecclesiastica IV.30.3 and V, Introduction, 1, trans. McGiffert, NPNF 2nd series, vol. 1; NewAdvent.org. Note that Eusebius, like Irenaeus, styles Eleutherius "the twelfth from the apostles."

6. 6. Liber Pontificalis, "Soter," in Louise Ropes Loomis, The Book of the Popes (Liber Pontificalis) (New York: Columbia University Press, 1916), 16, with her note on the entry's "Severus": "This should be Verus." The consular years the chronicle attaches (162–170) are irreconcilable with any modern reconstruction of the reign.

7. 7. The reconstruction of the conventional dates is discussed s.v. "Soter" in J. N. D. Kelly and Michael J. Walsh, The Oxford Dictionary of Popes, 2nd ed. (Oxford University Press, 2010); the 1908 Catholic Encyclopedia reports "Soter was pope for eight years, c. 167 to 175 (Harnack prefers 166–174)": John Chapman, "Caius and Soter, Saints and Popes," in The Catholic Encyclopedia, vol. 3 (New York: Robert Appleton Company, 1908), NewAdvent.org.

8. 8. Liber Pontificalis, "Soter" (Loomis, The Book of the Popes, 16). Loomis glosses Fundi as the modern Fondi.

9. 9. Liber Pontificalis, "Soter" (Loomis, The Book of the Popes, 16), with Loomis's note that several manuscripts read "no nun" instead of "no monk," perhaps influenced by the parallel decree in the life of Boniface I, and her observation that the author of the chronicle evidently belonged to the secular clergy.

10. 10. Dionysius of Corinth, letter to Soter and the Romans, quoted in Eusebius, Historia Ecclesiastica IV.23.9–10, trans. McGiffert, NPNF 2nd series, vol. 1; NewAdvent.org.

11. 11. Eusebius, Historia Ecclesiastica IV.23.11, trans. McGiffert, NPNF 2nd series, vol. 1; NewAdvent.org. On 1 Clement and its afterlife in Corinth, see the Clement entry of this series.

12. 12. Ignatius of Antioch, Letter to the Romans, prescript, where the Roman church is addressed as the one "which also presides in the place of the region of the Romans" and "which presides over love" (so the ANF rendering; the Greek prokathēmenē tēs agapēs is commonly translated "presiding in love"); trans. in Ante-Nicene Fathers, vol. 1. The juxtaposition of Ignatius's phrase with the practical charity attested by Dionysius is a commonplace of the scholarly literature rather than a magisterial claim; see the following note.

13. 13. Eamon Duffy, Saints and Sinners: A History of the Popes, 4th ed. (New Haven: Yale University Press, 2014), ch. 1, which quotes Ignatius's greeting and then presents the Dionysius–Soter correspondence as the continuing practical expression of Rome's "broad concern" for other churches: "the Roman community continued to show that broad concern in practical ways, by sending money as well as advice and reproof to churches in need."

14. 14. Eusebius, Historia Ecclesiastica IV.23.12, trans. McGiffert, NPNF 2nd series, vol. 1; NewAdvent.org.

15. 15. Chapman, "Caius and Soter," Catholic Encyclopedia, vol. 3 (1908): "The letter which Soter had written in the name of his church is lost, though Harnack and others have attempted to identify it with the so-called 'Second Epistle of Clement.'"

16. 16. On the genre and date of 2 Clement—an anonymous homily, commonly dated c. 140–160, its full text discovered by Philotheos Bryennios in 1873 and published in 1875—see the standard critical introductions, e.g., in Michael W. Holmes, The Apostolic Fathers: Greek Texts and English Translations, 3rd ed. (Grand Rapids: Baker Academic, 2007). The identification with Soter's letter, defended by Harnack, is generally abandoned in current scholarship.

17. 17. Praedestinatus I.26 and I.86, an anonymous work of c. 435 sometimes attributed to Arnobius the Younger; Latin text in Migne, PL 53. The catalogue asserts both that Soter wrote against the Cataphrygians and that Tertullian wrote against Soter—the latter chronologically impossible as framed. Its notices are not treated as reliable evidence for second-century events.

18. 18. Chapman, "Caius and Soter," Catholic Encyclopedia, vol. 3 (1908); NewAdvent.org.

19. 19. Calendarium Romanum (Vatican City: Libreria Editrice Vaticana, 1969), on the finding that Soter and Caius are by no right to be numbered among the martyrs ("nullo enim iure martyrum numero S. Soter et S. Caius sunt computandi"); Martyrologium Romanum, editio typica altera (Vatican City: Typis Vaticanis, 2004), 22 April, which commemorates Soter as pope, without the martyr title, recalling the charity toward the brethren celebrated by Dionysius of Corinth.

20. 20. The Depositio Martyrum of the Chronograph of 354, in Theodor Mommsen, ed., Chronica Minora, vol. 1, MGH Auctores Antiquissimi 9 (Berlin, 1892), 71–72; transcription at Tertullian.org. The companion Depositio Episcoporum begins only with Lucius (d. 254); no pope between Peter and Callixtus appears in the martyr list.

21. 21. Liber Pontificalis, "Soter" (Loomis, The Book of the Popes, 16), with Loomis's note that the cemetery of Callixtus, "if in existence at the time, was certainly not known by the name of Callistus, who was the fifth pope after Anicetus," and that the Vatican reading "is probably the correct one."

22. 22. Peter Lampe, From Paul to Valentinus: Christians at Rome in the First Two Centuries, trans. Michael Steinhauser (Minneapolis: Fortress Press, 2003), 397: "Before the second half of the second century there was in Rome no monarchical episcopacy for the circles mutually bound in fellowship." Lampe treats Anicetus, Soter, and Eleutherius as transitional figures before Victor's energetic assertion of the office; for the opposing considerations, see Francis A. Sullivan, From Apostles to Bishops: The Development of the Episcopacy in the Early Church (New York: The Newman Press, 2001), and the discussion in the Anicetus entry.