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Simplician
former Archbishop of Milan; a Saint in the Catholic Church
SaintFull write-upPre-congregation
Feast: 15 August (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Born
320
Died
400
Beatified
—
not needed: before formal processes
Canonised
By tradition
recognised before formal processes began
Who they were
At Milan, Saint Simplician, bishop, whom Saint Ambrose designated as his successor and whom Saint Augustine celebrated with praise.
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 August as a bishop of Milan chosen by Saint Ambrose as his successor.
Sources
- Roman Martyrology, 15 August (Italian Bishops' Conference, Santo del giorno)
- Wikidata Q1433011 — dates, feast day and identifiers (CC0)
- English Wikipedia — Simplician (CC BY-SA)
Checked against the sources listed on 22 September 2026. Corrections welcome.