The story of Malachy II. is so interwoven with the still-more illustrious career of Brian _Borooa_, that it will not lose in interest by being presented in detail. But before entering on the rivalry of these great men, we must again remark on the altered position which the Northmen of this age hold to the Irish from that which existed formerly. A century and a half had now elapsed since their first settlement in the seaports, especially of the eastern and southern Provinces. More than one generation of their descendants had been born on the banks of the Liffey, the Shannon, and the Suir. Many of them had married into Irish families, had learned the language of the country, and embraced its religion. When Limerick was taken by Brian, Ivar, its Danish lord, fled for sanctuary to Scattery Island, and when Dublin was taken by Malachy II., Olaf the Crooked fled to Iona. Inter-marriages with the highest Gaelic families became frequent, after their conversion to Christianity. The mother of Malachy, after his father's death, had married Olaf of Dublin, by whom she had a son, named _Gluniarran (Iron-Knee_, from his armour), who was thus half-brother to the King. It is natural enough to find him the ally of Malachy, a few years later, against Ivar of Waterford; and curious enough to find Ivar's son called Gilla-Patrick—servant of Patrick. Kellachan of Cashel had married a Danish, and Sitrick "of the Silken beard," an Irish lady. That all the Northmen were not, even in Ireland, converted in one generation, is evident. Those of Insi-Gall were still, perhaps, Pagans; those of the Orkneys and of Denmark, who came to the battle of Clontarf in the beginning of the next century, chose to fight on Good Friday under the advice of their heathen Oracles. The first half of the eleventh century, the age of Saint Olaf and of Canute, is the era of the establishment of Christianity among the Scandinavians, and hence the necessity for distinguishing between those who came to Ireland, direct from the Baltic, from those who, born in Ireland and bred up in the Christian faith, had as much to apprehend from such an invasion, as the Celts themselves. CHAPTER V. REIGN OF MALACHY II. AND RIVALRY OF BRIAN.