The MACDONALDS of ISLA and KINTYRE, called the Clan IAN VOR, whose chiefs were usually styled lords of Dunyveg (from their castle in Isla) and the Glens, were descended from John Mor, second son of “the good John of Isla,” and of Lady Margaret Stewart, daughter of King Robert II. From his brother Donald, Lord of the Isles, he received large grants of land in Isla and Kintyre, and by his marriage with Marjory Bisset, heiress of the district of the Glens in Antrim, he acquired possessions in Ulster. He was murdered before 1427 by an individual named James Campbell, who is said to have received a commission from King James I. to apprehend him, but that he exceeded his powers by putting him to death. His eldest son was the famous Donald Balloch. From Ranald Bane, a younger brother of Donald Balloch, sprang the Clanranaldbane of Largie in Kintyre. Donald Balloch’s grandson, John, surnamed _Cathanach_, or warlike, was at the head of the clan Ian Vor, when the lordship of the Isles was finally forfeited by James IV. in 1493. In that year he was among the chiefs, formerly vassals of the Lord of the Isles, who made their submission to the king, when he proceeded in person to the West Highlands. On this occasion he and the other chiefs were knighted. Alexander of Isla was with Sir Donald of Lochalsh when, in 1518, he proceeded against the father-in-law of the former, MacIan of Ardnamurchan, who was defeated and slain, with two of his sons, at a place called Craiganairgid, or the Silver Craig in Morvern. The death of Sir Donald soon after brought the rebellion to a close. In 1529 Alexander of Isla and his followers were again in insurrection, and being joined by the Macleans, they made descents upon Roseneath, Craignish, and other lands of the Campbells, which they ravaged with fire and sword. Alexander of Isla being considered the prime mover of the rebellion, the king resolved in 1531 to proceed against him in person, on which, hastening to Stirling, under a safeguard and protection, he submitted, and received a new grant, during the king’s pleasure, of certain lands in the South Isles and Kintyre, and a remission to himself and his followers for all crimes committed by them during the late rebellion. In 1543, on the second escape of Donald Dubh, grandson of John, last lord of the Isles, and the regent Arran’s opposing the views of the English faction, James Macdonald of Isla, son and successor to Alexander, was the only insular chief who supported the regent. In the following year his lands of Kintyre were ravaged by the Earl of Lennox, the head of the English party. After the death of Donald Dubh, the islanders chose for their leader James Macdonald of Isla, who married Lady Agnes Campbell, the Earl of Argyll’s sister, and though the most powerful of the Island chiefs, he relinquished his pretensions to the lordship of the Isles, being the last that assumed that title.