No likeness on file
Nonnus of Porto
martyr near present-day Fiumicino
SaintResearchedDate unknown
Feast: 5 September (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Born
—
unknown
Died
—
unknown
Beatified
—
not on record
Canonised
—
not on record
Who they were
Near present-day Fiumicino, Saints Acontius, Nonnus, Herculanus and Taurinus, martyrs.
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 5 September as a martyr near present-day Fiumicino.
Sources
- Roman Martyrology, 5 September (Italian Bishops' Conference, Santo del giorno)
- Wikidata R1c45557a — dates, feast day and identifiers (CC0)
Checked against the sources listed on 22 September 2026. Corrections welcome.