Tadhg Mac Cárthaigh
Irish bishop
Feast: 24 October (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Who they were
At Borgo Sant'Antonio, near Ivrea, in Piedmont, the passing of Blessed Thaddeus McCarthy, bishop of Cork and Cloyne in Ireland, who left his see because of the troubles caused by the hostility of the powerful and, while travelling to Rome, passed to heaven.
The miracles
The Roman Martyrology does not describe the miracles approved in the cause.
Why that counted as sanctity
The Roman Martyrology remembers him on 25 October as a bishop of Cork and Cloyne driven from his see who died on the way to Rome.
The cause
The cause continues. No postulation address is published here yet. Favours received through this person’s intercession, and offers of help, are best sent to the religious order or congregation they belonged to, or to the diocese where the cause was opened; either will pass them to the postulation.
- Roman Martyrology, 25 October (Italian Bishops' Conference, Santo del giorno)
- Wikidata Q365996 — dates, feast day and identifiers (CC0)
- English Wikipedia — Tadhg Mac Cárthaigh (CC BY-SA)
Checked against the sources listed on 22 September 2026. Corrections welcome.