In 1614-15 a formidable rebellion broke out in the South Hebrides, arising from the efforts made by the clan Donald of Islay to retain that island in their possession. The castle of Dunyveg in Islay, which, for three years previous to 1614, had been in possession of the Bishop of the Isles, having been taken by Angus Oig, younger brother of Sir James Macdonald of Islay, from Ranald Oig, who had surprised it, the former refused to restore it to the bishop. The Privy Council took the matter in hand, and, having accepted from John Campbell of Calder an offer of a feu-duty or perpetual rent for Islay, they prevailed on him to accept a commission against Angus Oig and his followers. The clan Donald, who viewed with suspicion the growing power of the Campbells, looked upon this project with much dislike, and treated certain hostages left by the bishop with great severity. Even the bishop remonstrated against making “the name of Campbell greater in the Isles than they are already,” thinking it neither good nor profitable to his majesty, “to root out one pestiferous clan, and plant in another little better.” The remonstrance of the bishop and an offer made to put matters right by Sir James Macdonald, who was then imprisoned in Edinburgh castle, were alike unheeded, and Campbell of Calder received his commission of Lieutenandry against Angus Oig Macdonald, Coll Mac-Gillespic, and the other rebels of Islay. A free pardon was offered to all who were not concerned in the taking of the castle, and a remission to Angus Oig, provided he gave up the castle, the hostages, and two associates of his own rank.