The Feuds of the Clans, by Alexander MacGregor, , at sacred-texts.com
The year of God 1576, Y Roy Mackay of Strathnaver dying, there arose civil dissension in Strathnaver betwixt John Mackay (the son of Y Roy) and Neil Nawerigh (the said Y Roy's brother). John Mackay excludes his uncle Neil (who was thought to be the righteous heir), and took possession of Strathnaver. Neil, again, alleging that his nephews John and Donald were bastards, doth claim these lands, and makes his refuge of John, Earl of Caithness, of whom he did obtain a company of men, who were sent with Neil's four sons to invade Strathnaver. They take the possession of the country from John Mackay, who, being unable to resist their forces, retires to the Clan Chattan to seek their support, and leaves his brother Donald Mackay to defend the country as he might. Donald, in his brother John's absence, surprised his cousin-german under silence of the night at Dail-Riabhach, and killed two of his cousins (the sons of Neil Nawerigh) with the most part of their company. Thereafter, Neil Nawerigh came and willingly
surrendered himself to his nephews John and Donald, who caused apprehend their uncle Neil, and beheaded him at a place called Clash-nan-ceap in Strathnaver.