Grant was the eldest son of Lieutenant Colonel Alexander Grant and Jane Hannay. Politician
Henry Hunt brought a libel action against Grant, the ''True Sun's'' proprietor, publisher John Bell, and printer John Ager for an article published on 18 December 1832; however, Hunt was awarded damages of one farthing. Grant, Bell and Ager were prosecuted, convicted and confined in 1834 to the
King's Bench Prison for advocating tax resistance against the British government's
window tax. He was later pardoned. He was a police magistrate at Maitland, in the
Hunter Valley and sub editor of the
Sydney Gazette. In 1845 he was elected to the
New South Wales Legislative Council; this election was voided, but he was re-elected later that year and served until 1848. Grant subsequently moved to
Redcastle, Scotland and died in
London on . ==Marriage and issue==