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Caomhán Santleathan
Irish saint of the 7th century
SaintFull write-upDate unknown
Feast: 12 June (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Born
—
unknown
Died
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unknown
Beatified
—
not on record
Canonised
—
not on record
Who they were
Caomhan, of Ard-Caomhain, by the side of Loch Garman, in Leinster; and this is Caomhan, or Sanct-Lethan, and he had the same mother as Caoimhghin and Natcaeimhe, of Tir-da-ghlas, i.e., Caoimell, daughter of Cennfhionnan, son of Cis, son of Lughaidh. He was of the race of Corb Uloim, son of Fergus, son of Ross, son of Rudhraighe.
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 Martyrology of Donegal remembers him on 12 June.
Connected on this site
- Athracht Saint Brother or sister
Sources
- The Martyrology of Donegal (tr. J. O'Donovan, ed. J. H. Todd and W. Reeves, 1864), 12 June
- Wikidata Q139257038 — dates, feast day and identifiers (CC0)
Checked against the sources listed on 22 September 2026. Corrections welcome.