Grant was educated in the care of Patrick Grant, Lord Elchies, S.C.J., on whose advice he studied law, but, preferring a military career, obtained a commission in his brother’s regiment, commanded by James St. Clair.
Through St. Clair and Argyll Grant obtained a major’s commission in the new Highland regiment, commanded by Archibald Montgomerie; recruited two companies of Grants; and sailed for Charleston, South Carolina, in 1757.
In 1760 he served against the Cherokees in South Carolina. Contemptuous of South Carolina’s war effort, he had a violent quarrel with Col. Middleton, the provincial commander, over the merits of their respective troops.
An able, if autocratic, administrator, he vigorously promoted the development of communications, agriculture and settlement; took a firm line on ‘land grabbing’; and maintained good relations with the Indians, claiming that American backwoodsmen were often the aggressors. On one occasion, in fulfilment of his pledge that ‘red and white rogues’ be equally punished, he ordered the execution of a white man convicted of having murdered an Indian. Proud of his colony, he wrote to Robert Grant of Tammore, 8 Jan. 1768:
This province, which was a desert when I came to it, though inhabited by Spaniards at least 200 years, will soon be a fruitful and plentiful country, it fills faster with inhabitants than I could well have expected.
In 1770, by the death of his nephew, Grant became laird of Ballindalloch. Hillsborough at once offered him 15 months leave, which Grant however postponed accepting:
People are accustomed to me and will go on as they have begun while I remain with them, but I am afraid of trusting them to themselves. Dissension might creep in if there was a change of measures to mine, and East Florida, which I have taken so much pain about for seven years, would dwindle to nothing.
He wrote to Brigadier Haldimand in West Florida, 20 Oct. 1770:
Ill health, however, induced Grant to go home in the early summer of 1771.
In April 1773 he was returned unopposed for Tain Burghs on the Sutherland interest. He voted with Administration, and at the general election of 1774 was re-elected after a contest. While a petition was pending against him, Grant made a violent speech on 2 Feb. 1775, ridiculing what he considered American religious cant, the poor quality of colonial troops, and boasting that with 5,000 regulars he could march from one end of America to the other.
Grant was not interested in a parliamentary career. He wanted another governorship or a high military command; and in the spring of 1775 was sent to America with the rank of brigadier. He served at Boston until the evacuation, and distinguished himself at the capture of New York. After his successful operations on Long Island he wrote to Richard Rigby, 2 Sept. 1776:
You will be glad and Lord North not displeased that we have had the field day I talked of ... and if a good bleeding can bring those bible-faced Yankees to their senses, the fever of independence should soon abate ... These cursed saints put me in the newspapers as being killed and rejoiced exceedingly at getting rid of a man who had abused them in Parliament ... They may from compulsion become dutiful subjects for a time, but they will never be cordial and affectionate ... In the course of the winter the commissioners will probably be able to bring things to an accommodation, for I don’t look for another campaign.
He was wrong. He spent the next two years on active service in New Jersey, fought at Brandywine, took part in the capture of and withdrawal from Philadelphia, and was highly commended by Howe and Clinton, who in 1778 appointed him to command the land forces in the expedition to St. Lucia.
After the capture of the island Grant, crippled by gout and fever, sailed for England, and on his arrival was attacked in the Lords by Shelburne on 25 Nov. 1779,
At the general election of 1780 Grant lost Tain Burghs and unsuccessfully contested Elgin Burghs. North in 1782 mentioned him to the King as a possible candidate for Inverness-shire or Elginshire.
He continued in Parliament until the age of 82, a corpulent, amiable, eccentric old gentleman, well known in London society as a bon viveur and gourmet. Every summer he travelled north, with his retinue of attendants and his black cook, in his state coach, to his Ballindalloch estates. Here he spent immense sums on improving agriculture, building roads and bridges, dispensing vast hospitality, and ruled his tenants with the same firm but benevolent paternalism which had characterized his government of Florida.
He died 13 Apr. 1806.
