Picture: AnonymousUnknown author · Public domain · Wikimedia Commons
Cleonicus
early 4th-century martyr of Pontus
SaintFull write-upPre-congregation
Feast: 3 March (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Born
250
Died
308
Beatified
—
not needed: before formal processes
Canonised
By tradition
recognised before formal processes began
Who they were
At Amasea in Pontus, in present-day Turkey, Saints Cleonicus and Eutropius, martyrs during the persecution of the Emperor Maximian under the governor Asclepiodotus.
The miracles
There was never a formal cause: he has been honoured as a saint since before the Church's formal processes began.
Why that counted as sanctity
The Roman Martyrology remembers him on 3 March as a martyr at Amasea in Pontus in the persecution of the Emperor Maximian.
Connected on this site
- Eutropius Saint Brother or sister
Sources
- Roman Martyrology, 3 March (Italian Bishops' Conference, Santo del giorno)
- Wikidata Q3650618 — dates, feast day and identifiers (CC0)
Checked against the sources listed on 22 September 2026. Corrections welcome.