In the year 1516, Adam Earl of Sutherland, in anticipation of threatened dangers in the north, entered into bonds of friendship and alliance with the Earl of Caithness for mutual protection and support. The better to secure the goodwill and assistance of the Earl of Caithness, Earl Adam made a grant of some lands upon the east side of the water of Ully; but the Earl of Caithness, although he kept possession of the lands, joined the foes of his ally and friend. The Earl of Sutherland, however, would have found a more trustworthy supporter in the person of Y-Roy-Mackay, who had come under a written obligation to serve him the same year; but Mackay died, and a contest immediately ensued in Strathnaver, between John and Donald Mackay his bastard sons, and Neill-Naverigh Mackay, brother of Y-Roy, to obtain possession of his lands. John took possession of all the lands belonging to his father in Strathnaver; but his uncle Neill laid claim to them, and applied to the Earl of Caithness for assistance to recover them. The Earl, after many entreaties, put a force under the command of Neill and his two sons, with which they entered Strathnaver, and obtaining an accession of strength in that country, they dispossessed John Mackay, who immediately went to the clan Chattan and clan Kenzie, to crave their aid and support, leaving his brother Donald Mackay to defend himself in Strathnaver as he best could. Donald not having a sufficient force to meet his uncle and cousins in open combat, had recourse to a stratagem which succeeded entirely to his mind. With his little band he, under cloud of night, surprised his opponents at Delreavigh in Strathnaver, and slew both his cousins and the greater part of their men, and thus utterly destroyed the issue of Neill. John Mackay, on hearing of this, immediately joined his brother, and drove out of Strathnaver all persons who had favoured the pretensions of his uncle Neill-Naverigh. This unfortunate old man, after being abandoned by the Earl of Caithness, threw himself upon the generosity of his nephews, requesting that they would merely allow him a small maintenance to keep him from poverty during the remainder of his life; but these unnatural relatives, regardless of mercy and the ties of blood, ordered Neill to be beheaded in their presence by the hands of Claff-na-Gep, his own foster brother.[164]