The Feuds of the Clans, by Alexander MacGregor, , at sacred-texts.com
About the year of God 1478, there was some dissension in Caithness betwixt the Keiths and the Clan Gunn. A meeting was appointed for their reconciliation, at the Chapel of St. Tayre, in Caithness, hard by Girnigo, with twelve horse on either side. The Crowner (chieftain of the Clan Gunn) with the most part of his sons and chief kinsmen came to the chapel, to the number of twelve; and as they were within the chapel at their prayers, the Laird of Inverugie and Ackergill arrived there with twelve horse, and two men upon every horse; thinking it no breach of trust to come with twenty-four men, seeing they had but twelve horses as was appointed. So the twenty-four gentlemen rushed in at
the door of the chapel, and invaded the Crowner and his company unawares; who, nevertheless, made great resistance. In the end the Clan Gunn were all slain, with the most of the Keiths. Their blood may be seen at this day upon the walls within the Chapel of St. Tayre, where they were slain. Afterwards William Mackames (the Crowner's grandchild) in revenge of his grandfather, killed George Keith of Ackergill and his son, with ten of their men, at Drummuie in Sutherland, as they were travelling from Inverugie into Caithness.