A Western Father in the Orthodox Calendar

Hilary of Poitiers (c. 310–367) died and is buried in Gaul, two and a half centuries before the West and East drifted toward schism; he is therefore a Father of the one undivided Church, and his name stands in the calendars of both. This file sets out his feast — 13 January in the post-Tridentine Roman calendar, formerly 14 January in the older Roman reckoning and in some Orthodox observances — together with the title of Doctor of the Church conferred on him in 1851, and asks how an Orthodox reader rightly receives a Latin Father whose theology was forged before the divisions of the second millennium.

Tradition: Pan-Orthodox (pre-Schism West; Church Father)

A Father of the Undivided Church

Hilary belongs to the period the East and West still hold in common. He was bishop of Poitiers in Roman Gaul from about 350 until his death in or about 367; he wrote against the Arian and “Homoian” parties at the height of the fourth-century Trinitarian struggle; and he died nearly seven centuries before the conventional date of the Great Schism and almost two centuries before the pontificate of Gregory the Great. The earliest external notice of him is contemporary or near-contemporary: Jerome, cataloguing the Christian writers of the Latin tongue, gives Hilary an entry and names his chief works — the books On the Trinity, the commentaries on the Psalms and on Matthew, and the polemical treatises of the exile — describing him as a man “of Poitiers in Gaul, bishop” who “imitated Quintilian” in eloquence (Jerome, De Viris Illustribus 100). That Jerome, writing about 392/393, already treats Hilary as an established Father of the Latin Church places him securely within the patristic age the whole Church confesses (on the patristic corpus as a shared inheritance, see The Church Fathers; on the period itself, Pre-Schism Church).

This chronological fact governs everything that follows. The principle long articulated in Orthodox reception of the Latin Fathers is that the saints of the West who lived and died before the estrangement of the two halves of Christendom are not “Roman Catholic saints” to be received from outside, but saints of the Orthodox Church’s own past — the patrimony of the undivided Church, before there was anything from which to be divided. Hilary’s stature in the fourth century was such that later tradition styled him “the Athanasius of the West,” the Latin counterpart to the great Alexandrian defender of Nicaea (the epithet is a commonplace of the scholarship; see Beckwith 2008, who frames Hilary’s whole career around the Nicene cause Athanasius led in the East; cf. Williams 1995). The comparison is apt precisely because Hilary fought the same battle, against the same heresy, in the same generation, on the far side of the empire — and because, like Athanasius, he suffered exile for it (the exile and its theological fruit are treated in The Twelve Books on the Trinity and in the account of his return in The Return and the Council of Paris).

The Feast: 13 January, and the Older 14 January

The Western commemoration of Hilary falls in January, close upon the feast of the Epiphany, and the precise day has shifted with the reform of the calendars. In the reckoning that descends from the Tridentine reform and is fixed in the Roman Martyrology, Hilary’s feast is kept on 13 January: the martyrology entry honours him at Poitiers as bishop and Doctor of the Church, “renowned for sanctity and learning,” who endured exile for the catholic faith (Martyrologium Romanum, 13 January). The 1969 reform of the General Roman Calendar retained Hilary on 13 January as an optional memorial, and the day continues to be observed there.

The older Roman calendar, however, kept his feast on 14 January, the day after the octave-day of the Epiphany. This earlier date is the source of a familiar institutional survival: the Hilary term — the spring law term of the English courts and the Lent term of certain universities — is named from the feast of Hilary, which opened it. [Disputed: standard reference works give 13 January as Hilary's day in the post-Tridentine and post-1969 Roman calendars (so the *Roman Martyrology* and the *Calendarium Romanum* of 1969), but report 14 January as his day in the pre-Tridentine Roman usage — the day after the Epiphany octave — which is why "Hilary term" attaches to 14 rather than 13 January (so *The Oxford Dictionary of the Christian Church*, s.v. "Hilary, St"; cf. Butler's *Lives of the Saints* under 13/14 January). The shift from 14 to 13 January, made so as to leave the Epiphany octave clear, is the explanation usually given for the two dates.] The two dates are thus not a contradiction but a record of calendrical adjustment: the substance — Hilary’s January feast next to the Theophany — is constant, while the exact day moved by one.

In the Eastern Orthodox reckoning, Hilary is commemorated as a pre-Schism Western saint, and here too the day is given as in January, with 14 January appearing in Orthodox calendars and synaxaria that have received the Western Fathers. [Disputed: Orthodox calendars that include the pre-Schism Latin saints commemorate Hilary of Poitiers in January, and 14 January is the date most commonly cited for him in this Eastern reckoning (so the calendars compiled in the tradition of the restored Western-saints commemorations); the proximity to the older Roman 14 January date is not accidental, since the Eastern observance received the Western feast. Because the inclusion of pre-Schism Western saints in Orthodox calendars is itself a matter of local and jurisdictional practice rather than of a single pan-Orthodox decree, the precise date and rank vary by calendar, and this should be checked against the menaion or calendar of one's own jurisdiction.] The fuller treatment of Hilary’s cult, relics, and liturgical memory belongs to its own place (see Relics, Feast, and Cult).

Doctor of the Church (1851)

To the ancient veneration the modern Western Church added a formal title. On 13 May 1851, Pope Pius IX declared Hilary of Poitiers a Doctor of the Church (Doctor Ecclesiae), extending to the universal Latin Church the office and Mass of a Doctor in his honour. The decree placed Hilary in the company of the great teachers whose doctrine the Church holds up as a sure guide, and it crowned a reputation that ran unbroken from Jerome and Augustine forward: Augustine had already named Hilary among the Latin Fathers whose authority told against the Pelagians, and had cited him by name as a witness to the catholic faith (Augustine, Contra Iulianum 1.3.9, where Hilary is ranged among the doctors of the Church; cf. Beckwith 2008 on Hilary’s standing in later Latin tradition).

It is worth marking what this title does and does not mean for an Orthodox reader. “Doctor of the Church” is a designation of the Roman communion, conferred in 1851, and as such it is a second-millennium act of a Church already separated from Orthodoxy; the Orthodox Church does not receive Hilary because of the 1851 decree, and the category “Doctor of the Church” has no exact Orthodox equivalent. What the decree records, rather, is the West’s own continuing recognition of a teacher whom the undivided Church had already received — and on that prior, shared reception the East and West genuinely agree. Hilary’s authority for Orthodoxy rests not on Pius IX but on the fourth-century Church’s reception of his Trinitarian theology, the same theology examined in The Trinitarian Synthesis and confessed in The Nicene Creed.

How an Orthodox Reader Receives a Western Father

The reception of Hilary raises, in a concrete case, the general question of how Orthodoxy holds the Latin Fathers of the first millennium. The governing principle is the one already stated: the Church before the schism is one Church, and its saints — whether they wrote in Greek or in Latin, whether they served at Antioch, Alexandria, Milan, or Poitiers — are saints of that one Church. Hilary is not received into Orthodoxy from the Roman communion; he is recognised as having belonged, from the beginning, to the Church that both communions claim as their common source.

Three things follow for the careful reader. First, Hilary is to be read for what he in fact taught, and what he taught is Nicene: he is, in the West, the foremost transmitter of the Greek Trinitarian theology of the Eastern Fathers, the man who carried the substance of the Nicene and pro-Nicene argument across the language barrier into Latin (this is the burden of The Nicene Legacy in Gaul). His De Trinitate, written largely in Eastern exile, is the work of a Latin bishop who had immersed himself in the Greek controversies and brought their resolution home; it is, in that sense, a bridge between the two halves of the Church rather than a witness to their division.

Second, the later Latin developments that an Orthodox reader will rightly scrutinise — above all the Filioque, which would in time be read back into the Western Fathers — must not be anachronistically imposed on Hilary. The retrospective enlistment of the Latin Fathers in the medieval Filioque controversy is a second-millennium reading; Hilary himself belongs to the fourth century and is to be interpreted in his own setting, against the Arians and Homoians who denied the Son’s full divinity, not against later trinitarian disputes between East and West. His doctrine of the Holy Trinity is to be measured by the rule of faith of his own age (on that rule, The Holy Trinity).

Third, the proper posture is sober and source-bound. Hilary’s life and cult come down to us through a mixed record — the reliable contemporary testimony of Jerome and Augustine and Hilary’s own writings on one side, and on the other a late hagiographical Life by Venantius Fortunatus, composed in the sixth century, roughly two hundred years after Hilary’s death, which bears the marks of its genre and its distance from the events. The wonders that Life attaches to Hilary — among them the banishing of snakes from the island of Gallinaria during his exile and the raising of an unbaptised infant — are to be received not as established fact but as the testimony of a sixth-century legend-bearing source. [Disputed: the miracle of Hilary banishing serpents from the island of Gallinaria, and the miracle of his raising an unbaptised infant from death, are not attested by any fourth-century source but appear in the sixth-century *Vita Sancti Hilarii* of Venantius Fortunatus; per METHODOLOGY §3.5 they are reported here as what that late Life claims, not as historical fact. Venantius wrote c. 550–570, some two centuries after Hilary, and his *Vita* is a hagiographical composition whose miracle-material has long been treated as devotional rather than documentary; Hilary's own near-silence about himself and Jerome's sober notice (*De Viris Illustribus* 100) make no mention of such wonders.] The discipline of distinguishing the contemporary record from the later legend is exactly the discipline Orthodoxy asks of its readers, and it is pursued in full in Sources and Assessment.

Received in this way — chronologically as a Father of the undivided Church, theologically as a Nicene teacher, and critically as a saint whose record must be sifted — Hilary of Poitiers stands in the Orthodox calendar not as a borrowed Western figure but as one of the Church’s own, kept in January beside the Theophany he loved to preach (on the overview of his veneration, see the collection README).

References

Jerome. De Viris Illustribus (On Illustrious Men) 100. (The earliest catalogue notice of Hilary; “of Poitiers in Gaul, bishop”; the list of his works and the comparison to Quintilian; trans. NPNF II/3.)
Augustine of Hippo. Contra Iulianum (Against Julian) 1.3.9. (Hilary ranged among the Latin doctors whose authority tells for the catholic faith against the Pelagians.)
Martyrologium Romanum (Roman Martyrology), entry for 13 January. (Hilary of Poitiers, bishop and Doctor of the Church, renowned for sanctity and learning, who suffered exile for the faith.)
Calendarium Romanum (General Roman Calendar), 1969. (Hilary retained on 13 January as an optional memorial after the post-Vatican II reform.)
The Oxford Dictionary of the Christian Church, ed. F. L. Cross and E. A. Livingstone, s.v. “Hilary, St.” (The 13/14 January feast-day question; the Epiphany-octave context; “Hilary term” from the 14 January feast.)
Butler’s Lives of the Saints, under 13–14 January. (The feast-day, the older Roman 14 January date, and the biographical summary.)
Pius IX. Decree declaring Hilary of Poitiers a Doctor of the Church, 1851. (The conferral of the title Doctor Ecclesiae on Hilary in the Roman communion.)
Beckwith, Carl L. Hilary of Poitiers on the Trinity: From De Fide to De Trinitate. Oxford: Oxford University Press, 2008. (Hilary’s career and reputation; “the Athanasius of the West”; his standing in later Latin tradition.)
Williams, Daniel H. Ambrose of Milan and the End of the Nicene–Arian Conflicts. Oxford: Clarendon Press, 1995. (Hilary within the Western pro-Nicene struggle and its transmission to Ambrose.)
Venantius Fortunatus. Vita Sancti Hilarii (Life of Saint Hilary), 6th century. (The late hagiographical Life; source of the Gallinaria serpent-banishing and the raising of the unbaptised infant — cited as legend, per METHODOLOGY §3.5, not as fact.)