This is probably a true picture of the relative position of the Norwegian and the Gaelic population at this time, and is no doubt equally applicable to the district of Galloway; but, during the rule of Olave over the Isles, a simultaneous effort seems to have been made by the Gaelic inhabitants of both districts to free this mainland border country from the presence of the Norwegians. The leader of the native Gaelic population of Argyll was Somerled, and of that of Galloway was Fergus. The former bears certainly a Norwegian name, but the names of father and grandfather have been preserved. He was son of Gillebride, son of Gille-adomnan, and these names are of too purely a Gaelic form to indicate anything but a Gaelic descent, and they are said in the Book of Clanranald to have taken refuge from the Norwegians in Ireland, and to have had a hereditary right to the mainland territories possessed by the latter. The name of the father of Fergus of Galloway has not been preserved, but his own name is a purely Gaelic form, and his personal qualities probably raised him to the leadership of the Gaelic population. Macvurich describes Gillebride, the father of Somerled, as being present at a conference held by the Macmahons and Maguires in Fermanagh, and obtaining help from them to regain his inheritance in Scotland. He went over to Scotland with his son Somerled and a band of followers, and when in the mountains and woods of Ardgour and Morvern, they were surprised by a large force of Norwegians, who were, however, eventually defeated by Somerled and his party; and, adds Macvurich, ‘he did not halt in the pursuit until he drove them northward across the river Sheil, and he did not cease from that work until he cleared the western side of Alban from such of the Norwegians as had acquired the dominion of the islands, with the exception of the island called Innsigall, and he gained victory over his enemies in every field of battle.’[28] We have no record of what took place in Galloway, except that the result appears to have been the same, for we find the people of Galloway joining the army of King David at the Battle of the Standard under their Celtic leaders, and Fergus fully established in his reign as Lord of Galloway. The Norwegians, however, were not allowed even to retain quiet possession of the Isles, and Somerled, who now appears as Regulus of Argyll, succeeded in eventually wresting the Southern Isles from them. Macvurich tells us that after he had cleared the mainland of the Norwegians ‘he spent some time in war, and another time in peace,’ and during one of these intervals peace appears to have been concluded between the leaders of the Gaelic population and the Norwegian king Olave, for the latter married Afreca, daughter of Fergus, the Celtic lord of Galloway, by whom he had a son, Godred, and gave one of his own daughters to Somerled, the Celtic Regulus of Argyll, in marriage, who