No likeness on file
Asterius of Ostia
3rd century Christian priest and martyr
SaintResearchedPre-congregation
Feast: 19 October (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Born
—
unknown
Died
223
Beatified
—
not needed: before formal processes
Canonised
By tradition
recognised before formal processes began
Who they were
At Ostia in Lazio, Saint Asterius, martyr.
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 19 October as a martyr at Ostia.
Sources
- Roman Martyrology, 19 October (Italian Bishops' Conference, Santo del giorno)
- Wikidata Q4810688 — dates, feast day and identifiers (CC0)
- English Wikipedia — Asterius of Ostia (CC BY-SA)
Checked against the sources listed on 22 September 2026. Corrections welcome.