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,
Chatham ministry of the remaining were comfortable with. In the fall of 1768, the Bedfords persuaded Grafton that it would be necessary to remove Shelburne from the ministry. This threatened dismissal roused Chatham, who in October 1768 resigned his post alongside Shelburne. Although Chatham's close friend Camden remained in the government, it was clear that the ministry was now dominated by the Bedfords, and the Duke of Grafton formally took over as Prime Minister – leading the Grafton ministry for slightly over a year until January 1770. Chatham ministry The Chatham ministry was a British government led by William Pitt, 1st Earl