John, second Lord Reay, joined the royalists under the Earl of Glencairn in 1654, and was taken at Balveny and imprisoned. By his wife, a daughter of Donald Mackay of Scourie, he had three sons; 1. Donald, master of Reay, who predeceased his father, leaving by his wife Ann, daughter of Sir George Munro of Culcairn, a son, George, third Lord Reay; 2. The Hon. Brigadier-General Æneas Mackay, who married Margaretta, Countess of Puchlor; and 3. The Hon. Colin Mackay. Æneas, the second son, was colonel of the Mackay Dutch regiment. His family settled at the Hague, where they obtained considerable possessions, and formed alliances with several noble families. Their representative, Berthold Baron Mackay, died 26th December 1854, at his chateau of Ophemert, in Guelderland, aged eighty-one. He married the Baroness Van Renasse Van Wilp, and his eldest son, the Baron Æneas Mackay, at one time chamberlain to the king of Holland, became next heir to the peerage of Reay, after the present family.
George, third Lord Reay, F.R.S., took the oaths and his seat in parliament, 29th October 1700. In the rebellion of 1715, he raised his clan in support of the government. In 1719, when the Earls Marischal and Seaforth, and the Marquis of Tullibardine, with 300 Spaniards, landed in the Western Highlands, he did the same, and also in 1745. He died at Tongue, 21st March 1748. He was thrice married, and had by his first wife, one son, Donald, fourth Lord Reay.
Donald, fourth Lord Reay, succeeded his father in 1748, and died at Durness, 18th August 1761. He was twice married, and, with one daughter, the Hon. Mrs Edgar, had two sons, George, fifth Lord Reay, who died at Rosebank, near Edinburgh, 27th February 1768, and Hugh, sixth lord. The fifth Lord Reay was also twice married, but had issue only by his second wife, a son, who died young, and three daughters. Hugh, his half-brother, who succeeded him, was for some years in a state of mental imbecility. He died at Skerray, 26th January 1797, unmarried, when the title devolved on Eric Mackay, son of the Hon. George Mackay of Skibo, third son of the third Lord Reay. He died at Tongue, June 25, 1782. By his wife, Anne, third daughter of Hon. Eric Sutherland, only son of the attainted Lord Duffus, he had five sons and four daughters. His eldest son, George, died in 1790. Eric, the second son, became seventh Lord Reay. Alexander, the next, an officer in the army, succeeded as eighth Lord Reay. Donald Hugh, the fourth son, a vice-admiral, died March 26, 1850. Patrick, the youngest, died an infant.
Eric, seventh Lord Reay, was, in 1806, elected one of the representative Scots peers. He died, unmarried, July 8, 1847, and was succeeded, as eighth Lord Reay, by his brother, Alexander, barrack-master at Malta, born in 1775. He married in 1809, Marion, daughter of Colonel Goll, military secretary to Warren Hastings, and relict of David Ross, Esq. of Calcutta, eldest son of the Scottish judge, Lord Ankerville; he had two sons and six daughters. He died in 1863, and was succeeded by his second son, Eric, who was born in 1813, George, the eldest son, having died in 1811.
The Mackays became very numerous in the northern counties, and the descent of their chiefs, in the male line, has continued unbroken from their first appearance in the north down to the present time. In the county of Sutherland, they multiplied greatly also, under other names, such as MacPhail, Polson, Bain, Nielson, &c. The names of Mackie and MacGhie are also said to be derived from Mackay. The old family of MacGhie of Balmaghie, which for about 600 years possessed estates in Galloway, used the same arms as the chief of the Mackays. They continued in possession of their lands till 1786. Balmaghie means Mackay town. The name MacCrie is supposed to be a corruption of MacGhie.
At the time of the rebellion of 1745, the effective force of the Mackays was estimated at 800 men by President Forbes. It is said that in the last Sutherland fencibles, raised in 1793 and disbanded in 1797, there were 33 John Mackays in one company alone. In 1794 the Reay fencibles, 800 strong, were raised in a few weeks, in “Lord Reay’s country,” the residence of the clan Mackay. The names of no fewer than 700 of them had the prefix Mac.
With regard to the term Siol Mhorgan applied to the clan Mackay, it is right to state that Mr Robert Mackay of Thurso, the family historian, denies that as a clan they were ever known by that designation, which rests, he says, only on the affirmation of Sir Robert Gordon, without any authority. He adds: “There are, indeed, to this day, persons of the surname Morgan and Morganach, who are understood to be of the Mackays, but that the whole clan, at any period, went under that designation, is incorrect; and those of them who did so, were always few and of but small account. The name seems to be of Welsh origin; but how it obtained among the Mackays it is impossible now to say.”
Of the branches of the clan Mackay, the family of Scourie is the most celebrated. They were descended from Donald Mackay of Scourie and Eriboll, elder son of Y Mackay III., chief of the clan from 1550 to 1571, by his first wife, a daughter of Hugh Macleod of Assynt.
Donald Mackay, by his wife, Euphemia, daughter of Hugh Munro of Assynt in Ross, brother of the laird of Foulis, had three sons and four daughters. The sons were Hugh, Donald, and William. Hugh, the eldest, succeeded his father, and by the Scots Estates was appointed colonel of the Reay countrymen. He married a daughter of James Corbet of Rheims, by whom he had five sons, William, Hector, Hugh, the celebrated General Mackay,[229] commander of the government forces at the battle of Killiecrankie, James and Roderick. He had also three daughters, Barbara, married to John, Lord Reay; Elizabeth, to Hugh Munro of Eriboll, and Ann, to the Hon. Capt. William Mackay of Kinloch. William and Hector, the two eldest sons, both unmarried, met with untimely deaths. In February 1688, the Earl of Caithness, whose wife was younger than himself, having conceived some jealousy against William, caused him to be seized at Dunnet, while on his way to Orkney, with a party of 30 persons. He was conveyed to Thurso, where he was immured in a dungeon, and after long confinement was sent home in an open boat, and died the day after. In August of the same year, his brother, Hector, accompanied by a servant, having gone to Aberdeenshire, on his way to Edinburgh, was waylaid and murdered by William Sinclair of Dunbeath and John Sinclair of Murkle, and their two servants. A complaint was immediately raised before the justiciary, at the instance of John, Earl of Sutherland, and the relatives of the deceased, against the Earl of Caithness and the two Sinclairs for these crimes. A counter complaint was brought by Caithness against the pursuers, for several alleged crimes from 1649 downwards, but a compromise took place between the parties.
General Mackay’s only son, Hugh, major of his father’s regiment, died at Cambray, in 1708, aged about 28. He left two sons, Hugh and Gabriel, and a daughter. Hugh died at Breda, a lieutenant-general in the Dutch service, and colonel of the Mackay Dutch regiment, which took its name from his father. He had an only daughter, the wife of lieutenant-general Prevost, of the British service, who, on the death of his father-in-law, without male issue, obtained the king’s license to bear the name and arms of Mackay of Scourie in addition to his own, which his descendants in Holland still bear. Gabriel, the younger son, lieutenant-colonel of the Mackay regiment, died without issue. James, the next brother of General Mackay, a lieutenant-colonel in his regiment, was killed at Killiecrankie, and Roderick, the youngest, died in the East Indies, both unmarried.