The Ante-Nicene Church · AD 180–313 · External witness

Constantius I Chlorus

c. AD 250 – 306 (died at York) · Caesar, then Augustus of the West · Father of Constantine · Gaul and Britain → Eboracum

External witness

Who Constantius I Chlorus was

The tetrarch of Gaul and Britain who executed the persecution edicts at their minimum — razing buildings, Lactantius says, but sparing every life — and whose death at York in 306 put the army's purple on his son Constantine. Eusebius made him the persecution's standing counter-example: the one persecutor's colleague whose house God prospered. Distinct from his grandson Constantius II.

Also listed in non-christian witnesses and roman emperors.

Common questions

When did Constantius I Chlorus live?

Constantius I Chlorus is dated c. AD 250 – 306 (died at York) in the archive, which places Constantius I Chlorus in the Ante-Nicene Church (AD 180–313). The dating is traditional and approximate; the archive marks it as uncertain rather than fixing a year the sources do not give.

Which early sources mention Constantius I Chlorus?

Constantius I Chlorus is named in 3 primary-source passages catalogued here, drawn from Lactantius and Eusebius of Caesarea. Every passage is quoted from a named public-domain translation, earliest first.

Where was Constantius I Chlorus from?

The archive associates Constantius I Chlorus with Gaul and Britain, Eboracum. The sources record more than one location, so the places are listed in the order the record moves through them.

Who were Constantius I Chlorus’ contemporaries?

The archive links Constantius I Chlorus to 4 other figures, including Constantine the Great, Maximian Herculius, Emperor Galerius and Emperor Diocletian. Each connection is drawn from a source that places them together, not from inference.

Primary-source mentions (3)

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

On the Deaths of the Persecutors 15

c. AD 315
Constantius, lest he should seem to dissent from the commands of his seniors, permitted the conventicles — that is, the walls, which could be built again — to be pulled down; but the true temple of God, which is in men, he preserved unharmed.
Lactantius · 15 · source text

Ecclesiastical History VIII.13

c. AD 325
Constantius, the most beneficent and mildest of emperors… alone kept his hands clean of the abominable impiety of the war against us, and preserved those under him unharmed.
Eusebius of Caesarea · VIII.13 · source text

Life of Constantine I.13–17 (the pious father of the pious son)

c. AD 339
Eusebius of Caesarea · Life of Constantine I.13 · source text

Connected in the archive

People

Events in this lifetime

Place

Places served

The one place the sources put Constantius I Chlorus.

  1. 1Eboracum

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