He was succeeded by his only son,
IV. ALEXANDER MACKENZIE, fourth of Ord, who before the 29th of June, 1723, married Jean, daughter of John Mackenzie, II. of Highfield, with issue -
1. Thomas, his heir and successor.
He died before the 10th of October, 1748, and was succeeded by his only son,
V. THOMAS MACKENZIE, fifth of Ord. He was educated at Fortrose, and married Ann, youngest daughter of Sir Kenneth Mackenzie, first Baronet and IV. of Scatwell (marriage contract 15th of June, 1730). She had a jointure, in case of her surviving him, of five chalders of victual rent, and three hundred merks Scots yearly, namely, three chalders of victual out of the lands of Broomhill, Ballavulaich, and Milltown of Ord, two chalders of the first and readiest of the rents of the Mill of Ord, and three hundred merks out of the lands of Corrievoulzie, Strathvaich, Stronchondrum, and Bruthach-nam-Bo. By her he had issue -
1. Alexander, his heir and successor.
2. Elizabeth, who married Alexander, only son of George Gillanders of Highfield, Chamberlain to Kenneth, Earl of Seaforth (marriage contract 17th April, 1777), with issue.
3. Abigail, who married George Mackenzie, IV. of Dundonnel, with issue.
Thomas died in 1803, and was succeeded by his only son,
VI. ALEXANDER MACKENZIE, sixth of Ord, who, during his father's lifetime, was, by deed of settlement of Katharine Bethune and Alexander Macdonald, her husband, dated 3rd December, 1785, appointed sole executor to Macdonald's only child Kenneth, whom failing, the said Alexander Mackenzie, younger of Ord, to be sole heir, "and this as a token of gratitude to the worthy family of Ord." Alexander married Helen, daughter of Neil Macinnes, Collector of Taxes, Aberdeen, with issue -