peace between North and South, but he fell suddenly ill soon after his arrival, and caused himself to be carried homewards in haste. At a church by the wayside, not far from Dublin, he was anointed and received the viaticum. He survived, however, to reach Armagh, where he expired on the 12th day of August. Kellach, latinized Celsus, his saintly successor, was promoted to the Primacy, and solemnly consecrated on Saint Adamnan's day following—the 23rd of September, 1105. Archbishop Celsus, whose accession was equally well received in Munster as in Ulster, followed in the footsteps of his pious predecessor, in taking a decided part with neither Leath Mogha nor Leath Conn. When, in the year 1110, both parties marched to Slieve-Fuaid, with a view to a challenge of battle, Celsus interposed between them the _Bachall-Isa_—and a solemn truce followed; again, three years later, when they confronted each other in Iveagh, in Down, similar success attended a similar interposition. Three years later Murtogh O'Brien was seized with so severe an illness, that he became like to a living skeleton, and though he recovered sufficiently to resume the exercise of authority he never regained his full health. He died in a spiritual retreat, at Lismore, on the 4th of the Ides of March, A.D. 1119, and was buried at Killaloe. His great rival, Donald of Leath Conn, did not long survive him: he died at Derry, also in a religious house, on the 5th of the Ides of February, A.D. 1121. While these two able men were thus for more than a quarter of a century struggling for the supremacy, a third power was gradually strengthening itself west of the Shannon, destined to profit by the contest, more than either of the principals. This was the family of O'Conor, of Roscommon, who derived their pedigree from the same stock as the O'Neils, and their name from Conor, an ancestor, who ruled over Connaught, towards the end of the ninth century. Two or three of their line before Conor had possessed the same rank and title, but it was by no means regarded as an adjunct of the house of Rathcrogan, before the time at which we have arrived. Their co-relatives, sometimes their rivals, but oftener their allies, were the O'Ruarcs of Breffny, McDermots of Moylurg, the O'Flahertys of _Iar_ or West Connaught, the O'Shaughnessys, O'Heynes, and O'Dowdas. The great neighbouring family of O'Kelly had sprung from a different branch of the far-spreading Gaelic tree. At the opening of the twelfth century, Thorlogh More O'Conor, son of Ruari of the Yellow Hound, son of Hugh of the Broken Spear, was the recognised head of his race, both for valour and discretion. By some historians he is called the half-brother of Murtogh O'Brien, and it is certain that he was the faithful ally of that powerful prince. In the early stages of the recent contest between North and South, Donald of Aileach had presented himself at Rathcrogan, the residence of O'Conor, who entertained him for a fortnight, and gave