Cellach was born in 1080. He was an Armagh man, sprung from the family which for centuries past had provided abbots for the monastery of that city, the grandson of a former abbot. He first appears on the scene in 1105, when on the death of Abbot Donnell he became coarb of Patrick and abbot of Armagh. He was elected, we may assume, in the customary way. He was then under twenty-six years of age, and was apparently still a layman. But his subsequent action shows that he was already a convinced disciple of the new movement. Doubtless he had fallen under the spell of Gilbert of Limerick. Six weeks after his election he abandoned the tradition of a century and a half, and received holy orders. But in other respects he trod in the footsteps of his predecessors. In the following year he went on a circuit of the Cenél Eoghain, and "took away his full demand: namely, a cow for every six, or an in-calf heifer for every three, or a half ounce of silver for every four, besides many donations also." Next he proceeded to Munster, with similar results. But his circuit of Munster is important for other reasons. There he had opportunities of intercourse with his Munster friends, Gilbert of Limerick and Malchus of Waterford. And with that circuit we may connect two incidents of the highest significance. In 1106, apparently in the latter part of the year, Caincomrac Ua Baigill, bishop of Armagh, died. The news of his death probably reached Cellach while he was in the south. Certainly in Munster Cellach was consecrated bishop. It is impossible not to connect the latter event with the former. He was consecrated to fill the vacancy created by the death of O'Boyle. Thus he was now bishop of Armagh as well as coarb of Patrick. In his own person he united the two lines of coarbial and episcopal succession, which had parted asunder in 957, when the first of a series of lay coarbs had been elected, and the first of the six contemporary bishops had been consecrated.[40] This was a great gain for the Reformers. The old anomaly of a ruler of the Church who was not a bishop had, so far as Armagh was concerned, disappeared for the time. And Armagh was the principal ecclesiastical centre in Ireland. Cellach might now call himself archbishop of Armagh, though he had not fulfilled the condition laid down by Gilbert, that an archbishop must receive the pall at the hands of the Pope. The title was actually accorded to him by so rigid a papalist as St. Bernard.[41]