Picture: Fiammenghini brothers · Attribution · Wikimedia Commons
Calimerius
Saint, Bishop of Milan
SaintFull write-upPre-congregation
Feast: 31 July (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Born
250
Died
280
Beatified
—
not needed: before formal processes
Canonised
By tradition
recognised before formal processes began
Who they were
At Milan, Saint Calimerius, bishop.
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 31 July as a bishop of Milan.
Sources
- Roman Martyrology, 31 July (Italian Bishops' Conference, Santo del giorno)
- Wikidata Q2696878 — dates, feast day and identifiers (CC0)
- English Wikipedia — Calimerius (CC BY-SA)
Checked against the sources listed on 22 September 2026. Corrections welcome.