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Cellach of Armagh
1080-1129 Irish bishop
SaintResearchedIrelandPre-congregation
Feast: 1 April (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Born
1080
Died
1129
Beatified
—
not needed: before formal processes
Canonised
By tradition
recognised before formal processes began
Who they were
At Ardpatrick in the region of Munster in Ireland, Saint Cellach, bishop of Armagh, who strongly promoted the renewal of the Church.
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 1 April as a bishop of Armagh who strongly promoted the renewal of the Church.
Sources
- Roman Martyrology, 1 April (Italian Bishops' Conference, Santo del giorno)
- Wikidata Q1052985 — dates, feast day and identifiers (CC0)
- English Wikipedia — Cellach of Armagh (CC BY-SA)
Checked against the sources listed on 22 September 2026. Corrections welcome.