Earl of Londonderry extinct on the death of his great-grandson, the fourth Earl, in 1714. The second creation came in 1726 in favour of the soldier and politician Thomas Pitt, 1st Baron Londonderry. He had already been created Baron Londonderry in 1719 and was made Viscount Gallen-Ridgeway at the same time as he was granted the earldom, also in the Peerage of Ireland. He was the husband of Lady Frances Ridgeway, daughter and heiress of the fourth Earl of the first creation. A member of the prominent Pitt family, he was the uncle of William Pitt, 1st Earl of Chatham. His younger son,
John Pitt, 2nd Earl of Chatham He continued to hold various ceremonial positions: he had been appointed Lieutenant Governor of Jersey and High Steward of Colchester in 1807, and in 1820 succeeded the Duke of Kent as Governor of Gibraltar. He died at his house in Charles Street, London, on 24 September 1835, aged 78. Chatham married The Hon. Mary Elizabeth Townshend, daughter of the 1st Baron Sydney, on 10 July 1783. The couple had no children. Lady Chatham died on 21 May 1821. Chatham did not remarry and, following his death, the Earldom of Chatham became extinct. John Pitt, 2nd Earl of Chatham General John