Somerled was slain, as we know, at Renfrew in the year 1164, and on his death his eldest son Dubhgal appears to have succeeded him in his mainland territories, while his possessions in the Isles fell to his second son Reginald with the Norwegian title of king. Godred died in the Isle of Man in the year 1187, and was succeeded by his eldest son Reginald. There thus came to be two Reginalds reigning over the Isles at the same time, the Norwegian Reginald the son of Godred, and the Celtic Reginald the son of Somerled. Both bore the title of King of the Isles, and thus they are often confounded. There is preserved in the Book of Fermoy a curious poem which throws some light on the state of the Isles at this time.[32] It consists mainly of a panegyric on the Norwegian Reginald, but appears to allude likewise to the other Reginald. When the Isles were divided, those which lie south of the Point of Ardnamurchan appear to have fallen to the share of Somerled, and his son Reginald seems to have had his chief seat in the island of Isla. The Isles retained by the Norwegians consisted of Skye, the Long Island, and the islands of Tyree and Coll. The latter island of Coll, which we find was the chief seat of the Jarls who had ruled the Isles under the king of Norway prior to the establishment of the Norwegian kingdom of the Isles, appears to have remained as the chief seat of the Norwegian Reginald, for he is addressed in the poem as king of Coll. The islands of Arran and Bute in the Firth of Clyde appear to have been shared between the two Reginalds, the Norwegian retaining Arran, which forms a prominent feature in the poem under the poetic name of _Eamain Abhlach_ or Eamania of the apple-trees,[33] and Bute passing over to the Celtic Reginald. It is unnecessary for our present purpose to follow the history of the Western Isles further. Suffice it to say that Argyll came under the power of the Crown in 1222, when Alexander the Second firmly established his authority over this extensive western region. In 1196 William the Lion had brought the great northern district of Caithness under subjection, and severed the southern half of it, which he placed under a Scotch lord, and in the same reign of Alexander the Second, the restricted earldom of Caithness passed into the possession of a branch of the Celtic family of the Earl of Angus, and he died in the island of Kerreray while endeavouring to wrest the Isles from Norway. In the following reign the whole kingdom of the Isles passed into the possession of the Scottish monarch, the last Norwegian king of Man having died in 1265, and the Isles being formally ceded to Alexander the Third in 1266; and thus the power of the Norwegians entirely disappeared from the mainland of Scotland and from the Western Isles, the islands of Orkney and Shetland alone remaining as a dependency of the kingdom of Norway.