Having established his court at Dublin, Henry styled himself King of all Hibernia, and summoned the whole of the Irish chiefs to his presence. Many obeyed; but the Kings of Connaught and Ulster, entrenched in their native mountains, refused to acknowledge his authority, and the sovereignty of Henry was limited by a line drawn across the island, from the mouth of the Shannon to that of the Boyne. All the pomp which distinguished the Plantagenet court was displayed in Dublin, and the Irish people--lively, impressible, and fond of novelty--derived pleasure from contemplating the splendid appearance of the Norman arms, horses, and accoutrements of war. The majority of the clergy also gave their support to the invader, and welcomed him as one bearing the authority of the Church. Henry promulgated the bull of Pope Adrian; and various reforms and observances of canonical discipline were introduced into the Irish Church. Henry's former haughtiness towards the clergy, and his resistance to the encroachments of the papal see upon the rights of the crown, had now disappeared. Not only did he require the support of the bishops to secure his new conquest, but the popular feeling excited throughout his dominions by the death of Becket rendered it necessary for him to conciliate where he had formerly threatened. This course of action met with temporary success, and Pope Alexander III. issued a bull confirming that of his predecessor, Adrian, and ratifying the king's title to the possession of Ireland. After he had remained in the country for a few months longer, Henry received news which compelled his immediate return to England. Having appointed officers to the chief places of power in the island, he sailed from Wexford on the 17th of April, 1172, and landed at Portfinnan, in Wales.