|Rev. Alban Butler (171173). Volume IV: April.|
The Lives of the Saints. 1866.
|St. Celsus, Bishop in Ireland|
|[In Irish, Ceallach.] HE was archbishop of Armagh and is commemorated in the Roman Martyrology on this day. He died on the 1st of April, in 1129, at Ard-Patrick, (that is, Patricks Mount,) in Munster. See the life of St. Malachy, his successor, and Sir James Ware.|| 1|