Background
The eldest son of Sir Robert Long, 6th Baronet and his wife Emma Child, he succeeded his father as 7th Baronet on 10 February 1767, and inherited the family estates, including the manors of Draycot and Athelhampton.
The eldest son of Sir Robert Long, 6th Baronet and his wife Emma Child, he succeeded his father as 7th Baronet on 10 February 1767, and inherited the family estates, including the manors of Draycot and Athelhampton.
He also became a generous benefactor of public and private charities, living a modest and unassuming lifestyle. In 1775 Long married firstly, Harriet, fourth daughter of Jacob Bouverie, 1st Viscount Folkestone. She died on 12 November 1777, there were no children from this marriage.
They had three daughters including Catherine, whose disastrous marriage to William Pole-Tylney-Long-Wellesley, 4th Earl of Mornington saw the destruction of Wanstead House.
Sir James Tylney-Long died at his home, Draycot House on 29 November 1794. Sir James" only son, also called James, was born two months before his father"s death and became the 8th Baronet.
The Baronetcy became extinct.
He was a member of the Wiltshire Militia, gaining the rank of Captain in 1759, and Major in 1769, and later formed the Draycot Troop of Yeomanry Cavalry. He was Member of Parliament for Marlborough (1762–1780), for Devizes (1780–1788) and elected for Wiltshire in 1788, replacing the late Charles Penruddocke.