For a considerable time the district of Sutherland had remained tranquil, but on the 11th of July, 1487, it again became the scene of a bloody encounter between the Mackays and the Rosses. To revenge the death of a relation, or to wipe away the stigma of a defeat, were considered sacred and paramount duties by the Highlanders; and if, from the weakness of the clan, the minority of the chief, or any other cause, the day of deadly reckoning was delayed, the feeling which prompted revenge was never dormant, and the earliest opportunity was embraced of vindicating the honour of the clan. Angus Mackay, son of the famous Neill of the Bass, having been killed at Tarbert by a Ross, his son, John Riabhaich Mackay, applied to John Earl of Sutherland, on whom he depended, to assist him in revenging his father’s death. The Earl promised his aid, and accordingly sent his uncle, Robert Sutherland, with a company of chosen men, to assist John Mackay. With this force, and such men as John Mackay and his relation Uilleam-Dubh-Mac-Iain-Abaraich, son of John Aberigh who fought at Drum-na-Coub, could collect, they invaded Strath-oy-kell, carrying fire and sword in their course, and laying waste many lands belonging to the Rosses. As soon as the Laird of Balnagown, the chief of the Rosses, heard of this attack, he collected all his forces, and attacked Robert Sutherland and John Riabhaich Mackay, at a place called Aldv-charrish. A long and obstinate battle took place; but the death of Balnagown and seventeen of the principal landed gentlemen of Ross decided the combat, for the people of Ross, being deprived of their leader, were thrown into confusion, and utterly put to flight, with great slaughter. [Illustration: ROSS. (Tartan)] The fruit of this victory was a large quantity of booty, which the victors divided the same day; but the avarice of the men of Assynt, induced them to instigate John Mackay to resolve to commit one of the most perfidious and diabolical acts ever perpetrated by men who had fought on the same side. The design of the Assynt men was, to cut off Robert Sutherland and his whole party, and possess themselves of their share of the spoil, before the Earl of Sutherland could learn the result of the battle, that he might be led to suppose that his uncle and his men had all fallen in the action with the Rosses. When this plan was divulged to Uilleam-Dubh-Mac-Iain-Abaraich, he was horrified at it, and immediately sent notice to Robert Sutherland of it, that he might be upon his guard. Robert assembled his men upon receipt of this extraordinary intelligence, told them of the base intentions of John Mackay, and put them in order, to be prepared for the threatened attack; but on John Riabhaich Mackay perceiving that Robert and his party were prepared to meet him, he slunk off, and went home to Strathnaver.[161]