It has been shown that Kenneth, from whom the Mackenzies take their name, was closely allied by marriage with William, second Earl of Ross, the latter having married Kenneth's maternal aunt. This fact by itself would be sufficient to establish the high position, which even at that early period, was occupied by Kenneth, who was already very closely connected with the O'Beolan Earls of Ross by blood and marriage. Kenneth himself married Morna or Morba, daughter of Alexander Macdougall, styled, "De Ergedia," Lord of Lorn by a daughter of John, the first Red Comyn, Lord of Badenoch, who died in 1273. Kenneth's wife was thus a sister of John, the Black Comyn, who died about 1299, having married Marjory, daughter of John Baliol, by whom he had John, the second Red Comyn, one of the competitors for the Scottish Crown, killed by Robert the Bruce in the Church of Dumfries in 1306. Kenneth's issue by Morna or Morba of Lorn was John Mackenzie, II. of Kintail, who was thus, through his mother, third In descent from John, the first Red Comyn, who died in 1273, and sixth from the great Somerled of the Isles, Thane of Argyle, progenitor of the Macdougalls of Lorn and of all the Macdonalds, who died in 1164. John made even a more illustrious alliance than his father, by which at that early date he introduced the Royal blood of Scotland and England into the family of Kintail. He married his relative, Margaret, sister of David, twelfth Earl of Atholl, slain in 1335, and daughter of David, the eleventh Earl, who died in 1327 (whose estates were forfeited by Edward I.), by Joan Comyn (died 1323), daughter of the Red Comyn killed by Robert the Bruce, and great granddaughter of John Baliol. Margaret's father, David, eleventh Earl of Atholl who died in 1327, was the oldest son of John de Strathbogie, tenth Earl, hanged by Edward I. Earl John's mother was the Countess Isabel de Dover, who died at a very old age in 1292, daughter of Richard Fitzroy de Chillam (died 1216), a natural son of King John of England. Kenneth Mackenzie, III. of Kintail, the issue of this marriage, was sixth in descent from John Baliol of the Royal line of Scotland and sixth from King John of England. The Norwegian blood of the Kings of Man was brought into the family by the marriage of this Kenneth to Finguala, daughter of Torquil Macleod, I. of Lewis, who was the grandson of Olave the Black, Norwegian King of Man, who died about 1237, by his wife Christina, daughter of Ferquhard "Mac an t'Sagairt," first O'Beolan Earl of Ross. The Royal blood of the Bruce was introduced by the marriage of Murdoch Mackenzie, V. of Kintail, to Finguala, daughter of Malcolm Macleod, III. of Harris (who has a charter in 1343), by Martha, daughter of David, twelfth Earl of Mar, son of Gratney, eleventh Earl (whose sister Isabel married Robert the Bruce) by his wife Christina, daughter of Robert Bruce, Earl of Carrick, and sister of King Robert the Bruce.