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Simplicio of Olbia
SaintFull write-upPre-congregation
Feast: 15 May (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Born
201
Died
304
Beatified
—
not needed: before formal processes
Canonised
By tradition
recognised before formal processes began
Who they were
In Sardinia, Saint Simplicius, priest.
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 15 May as a priest in Sardinia.
Sources
- Roman Martyrology, 15 May (Italian Bishops' Conference, Santo del giorno)
- Wikidata Q1110905 — dates, feast day and identifiers (CC0)
Checked against the sources listed on 22 September 2026. Corrections welcome.