Such circuits of the Irish kings, especially in days of opposition, were repeated with much regularity. They seem to have set out commonly in May—or soon after the festival of Easter—and when the tour of the island was made, they occupied about six weeks in duration. The precise number of men who took part in these visitations is nowhere stated, but in critical times no prince, claiming the perilous honour of _Ard-Righ_, would be likely to march with less than from five to ten thousand men. The movements of such a multitude must have been attended with many oppressions and inconveniences; their encampment for even a week in any territory must have been a serious burthen to the resident inhabitants, whether hostile or hospitable. Yet this was one inevitable consequence of the breaking up of the federal centre at Tara. In earlier days, the _Ard-Righ_, on his election, or in an emergency, made an armed procession through the island. Ordinarily, however, his suffragans visited him, and not he them; all Ireland went up to Tara to the _Feis_, or to the festivals of Baaltine and Samhain. Now that there was no Tara to go to, the monarch, or would-be monarch, found it indispensable to show himself often, and to exercise his authority in person, among every considerable tribe in the island. To do justice to Murtogh O'Brien, he does not appear to have sought occasions of employing force when on these expeditions, but rather to have acted the part of an armed negotiator. On his return from the demolition of Aileach (A.D. 1101), among other acts of munificence, he, in an assembly of the clergy of Leath Mogha, made a solemn gift of the city of Cashel, free of all rents and dues, to the Archbishop and the Clergy, for ever. His munificence to churches, and his patronage of holy men, were eminent traits in this Prince's character. And the clergy of that age were eminently worthy of the favours of such Princes. Their interposition frequently brought about a truce between the northern and southern kings. In the year 1103, the hostages of both were placed in custody with Donald, Archbishop of Armagh, to guarantee a twelvemonth's peace. But the next season the contest was renewed. Murtogh besieged Armagh for a week, which Donald of Aileach successfully defended, until the siege was abandoned. In a subsequent battle the northern force defeated one division of Murtogh's allies in Iveagh, under the Prince of Leinster, who fell on the field, with the lords of Idrone, Ossory, Desies, Kerry, and the Dublin Danes. Murtogh himself, with another division of his troops, was on an incursion into Antrim when he heard of this defeat. The northern visitors carried off among other spoils the royal tent and standard, a trophy which gave new bitterness on the one side, and new confidence on the other. Donald, the good Archbishop, the following year (A.D. 1105) proceeded to Dublin, where Murtogh was, or was soon expected, to renew the previous