Dugall, the eldest son of his father by the second marriage, seems to have possessed not only a share of the Isles, but also the district of Lorn, which had been allotted as his share of the territories belonging to his ancestors. On his death, however, the Isles, instead of descending immediately to his children, were acquired by his brother Reginald, who in consequence assumed the title of King of the Isles; but, by the same law of succession, the death of Reginald restored to his nephews the inheritance of their father. Dugall left two sons, Dugall Scrag and Duncan, who appear in the northern Sagas, under the title of the Sudereyan Kings. They appear to have acknowledged, at least nominally, the authority of the Norwegian king of the Hebrides; but actually they maintained an almost entire independence. Haco, the king of Norway, therefore came to the determination of reducing them to obedience and subjection, a design in which he proved completely successful. In a night attack the Norwegians defeated the Sudereyans, and took Dugall prisoner. Duncan was now the only member of his family who retained any power in the Sudereys; but nothing is known of his subsequent history except that he founded the priory of Ardchattan, in Lorn. He was succeeded by his son Ewen, who appears to have remained more faithful to the Norwegian kings than his predecessors had shown themselves; for, when solicited by Alexander II. to join him in an attempt he meditated to obtain possession of the Western Isles, Ewen resisted all the promises and entreaties of the king, and on this occasion preserved inviolate his allegiance to Haco. Alexander, it is well known, died in Kerreray (1249), when about to commence an attack upon the Isles, and was succeeded by his son Alexander III. When the latter had attained majority, he resolved to renew the attempt which his father had begun, and with this view excited the Earl of Ross, whose possessions extended along the mainland opposite to the Northern Isles, to commence hostilities against them. The earl willingly engaged in the enterprise, and having landed in Skye, ravaged the country, burned churches and villages, and put to death numbers of the inhabitants without distinction of age or sex. Haco soon appeared with a Norwegian force, and was joined by most of the Highland chiefs. But Ewen having altered his views, excused himself from taking any part against the force sent by the Scottish king; and the unfortunate termination of Haco’s expedition justified the prudence of this timely change. In the year 1263 the Norwegians were completely defeated by the Scots at the battle of Largs; and the Isles were, in consequence of this event, finally ceded to the kings of Scotland. This event, however, rather increased than diminished the power of Ewen, who profited by his seasonable defection from the Norwegians, and was favoured by the government to which that defection had been useful. But he died without any male issue to