Potamius of Lisbon

d. c. AD 360 · Bishop of Lisbon · Latin author (later Arianising) · Lisbon (Olisipo)

The Nicene Age

Who Potamius of Lisbon was

The earliest bishop of Lisbon known by name and the first Christian Latin author of the Iberian west, whose early orthodox works gave way — his critics said, for imperial favor — to support for the Arianizing 'dated creed' of Sirmium in 357. His surviving letters drew the reply of Phoebadius of Agen; his party is plain on the record.

Also listed in bishops beyond the great sees and heretics & schismatics.

Common questions

When did Potamius die?

Potamius of Lisbon is dated d. c. AD 360 in the archive, which places Potamius in the Nicene Age (AD 313–400). The dating is traditional and approximate; the archive marks it as uncertain rather than fixing a year the sources do not give.

What did Potamius write?

Potamius of Lisbon has 1 catalogued writing in the archive: Tractates and letters (On Lazarus · On the Martyrdom of Isaiah · On the Substance).

Which early sources mention Potamius?

Potamius of Lisbon is named in 2 primary-source passages catalogued here, drawn from Hilary of Poitiers and The Luciferian petition. Every passage is quoted from a named public-domain translation, earliest first.

Where was Potamius from?

The archive associates Potamius of Lisbon with Lisbon (Olisipo).

Writings (1)

Tractates and letters (On Lazarus · On the Martyrdom of Isaiah · On the Substance)

The first Lusitanian author's small, vivid corpus — recovered from under other men's names

[The tomb opened, the grave-cloths' knots undone — Latin prose at the edge of the grotesque]

Earliest witness · Early medieval Latin tradition (works long shuffled among other authors) (8th–9th c. onward)

Read the interlinear source text →

Primary-source mentions (2)

Every passage below is quoted from a named public-domain translation, earliest first.

Hilary of Poitiers, On the Synods 3 & 11 (AD 358–359; original Latin, summarized)

c. AD 360

[Contemporary witness. Hilary transmits 'the blasphemy composed at Sirmium by Osius and Potamius' — the manifesto of 357 forbidding the word 'substance' — and answers it clause by clause; the attribution to Potamius stands in Hilary's own heading.]

Hilary of Poitiers · source text

Faustinus & Marcellinus, Libellus precum to the Emperors 32 (c. AD 384; original Latin, working translation)

c. AD 384

Potamius, bishop of Lisbon, though he had first held the catholic faith, passed over to the Arian falsehood — won, it was said, by the promise of an imperial estate; and hastening to take possession of it, they add, he perished upon the road.