Donat O'Kennedy was

Archdeacon An archdeacon is a senior clergy position in the Church of the East, Chaldean Catholic Church, Syriac Orthodox Church, Anglican Communion, St Thomas Christians, Eastern Orthodox churches and some other Christian denominations, above that o ...

then

Bishop of Killaloe The Bishop of Killaloe ( ) is an episcopal title which takes its name after the town of Killaloe in County Clare, Ireland. In the Roman Catholic Church it remains a separate title, but in the Church of Ireland it has been united with other bish ...

from 1231 until 1252.""The diocesan history of Killaloe, Kilfenora, Clonfert, and Kilmacduagh (A.D. 639-A.D. 1886)" Cooke, E.A p17: Dublin, E.Ponsonby, 1886

References

13th-century Roman Catholic bishops in Ireland Archdeacons of Killaloe Bishops of Killaloe Date of birth unknown Date of death unknown Place of birth unknown {{Ireland-RC-bishop-stub