[1] The current chief is John Ruaridh Grant Mackenzie, 5th Earl of Cromartie.
His father was Ruaridh Grant Francis Blunt-Mackenzie, 4th Earl of Cromartie, who legally changed his surname to Mackenzie and was appointed chief of Clan Mackenzie by the Lord Lyon King of Arms in 1979.
His mother Sibell Lilian Sutherland-Leveson-Gower, Countess of Cromartie, married Colonel Blunt, and he inherited his titles and Mackenzie descent through her.
The last acknowledged chief through agnatic seniority (i.e. male sibling descent) was James Fowler Mackenzie, VIth of Allangrange (died 1907).
According to A.M. Mackenzie's History of the Mackenzies: the following families are given in the order in which they branched off from the main stem of Kintail and Seaforth: Allangrange, Dundonnell, Hilton, Glack, Loggie, Gairloch, Belmaduthy, Pitlundie, Culbo, Flowerburn, Letterewe, Portmore, Mountgerald, Lochend, Davochmaluag, Achilty, Ardross, Fairburn, Kilchrist, Suddie, Ord, Highfield, Kedcastle, Kincraie', Cromarty, Ardloch, Scatwell, Ballone, Kilcoy, Castle Fraser, Glenbervie, Applecross, Coul, Torridon, Delvine, and Gruinard.The Mackenzies of Allangrange succeeded F.H.
The only members of this family whose descendants can ever now by any possibility succeed to the Chiefship should it pass from the Mackenzies of Allangrange are (1) Alexander, second son of Kenneth Mor, first of Dundonnel, but of him there is no trace for more than two hundred years, and never likely to be.
(5) William, third son of the same Kenneth, an Episcopalian minister, who was married, and left issue, of whom, however, we know nothing.
(6) Roderick, William's immediate younger brother, and third son of the same Kenneth Mackenzie, III.
The male line of the Allangrange, family became extinct in 1907 by the death of James Fowler Mackenzie.
The main line was extinct upon the death of Alexander Mackenzies, 10th of Hilton and was succeeded by Roderick Mackenzie, I. of Brea, Chamberlain of Ferintosh, second son of Colin, by his wife Mary Simpson, third son of Murdoch, V. of Hilton, all the intermediate male heirs having, as has been shown, become extinct.
Kenneth Mackenzie, who recently resided at Tyrl-Tyrl, Taralga, near Sydney, New South Wales.
of Hilton, with issue including sons John (heir) and Downie, in Australia at the turn of the 19th century.
of Kintail, by his second wife Margaret, daughter of Roderick Macdonald, III.
Sir Hector David Mackenzie, 8th Baronet, assumed the surname Inglis.