Sir James Tylney-Long, 7th Baronet (1736 – 28 November 1794) was an English politician who sat in the House of Commons for 32 years from 1762 to 1794.
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.
[1] He added a new south front, and east and west wings around the core of the medieval manor house of Draycot.
[2][3] In 1775 Long married firstly, Harriot, fourth daughter of Jacob Bouverie, 1st Viscount Folkestone.
The Baronetcy became extinct and Catherine's marriage to spendthrift, high-stakes gambler and adulterous William Pole-Tylney-Long-Wellesley, 4th Earl of Mornington saw the destruction of Wanstead House, Wanstead, Essex (now London), but also produced their son who settled the remaining estates on his first cousin the 2nd Earl Cowley.