of the Treasury did indeed take part in running the Treasury, and as First Lord was the most senior person so tasked. Since control of money usually granted most power, it is not surprising that such a person would head the government as a whole. Indeed, even after decades of the emergence of the Prime Ministership William Pitt the Younger proffered that the Prime Minister "ought to be the person at the head of the finances." The two exceptions were Lord Chatham and Lord Salisbury. During Chatham's ministry of 1766–68 he occupied the office of Lord Keeper of the Privy Seal instead. Lord Salisbury became First Lord neither during his first term (1885–1886) nor his third (1895–1902), though he did become First Lord for the first two years of his second ministry (1886–1892). Since Salisbury, the two roles have become completely concomitant, so much so that the Prime Minister's official residence, 10 Downing Street, is in fact the official residence of the First Lord of the Treasury, which title is named on the letter box. Salisbury, as a marquess of vast independent wealth, had no use of an official residence, instead living in his grander town house at 20 Arlington Street in St James's, and could instead bestow it as a perquisite to other ministers, along with the First Lordship itself. Other positions have been linked to the Prime Ministership as well. Continuously since 1968, when the position was created by Harold Wilson, the Prime Minister has also served as Minister for the Civil Service. The adoption of this additional position was directly linked to reforms to HM Treasury, being created when responsibilities for the pay and management of the civil service was transferred from the Treasury to a new Civil Service Department. Since the Prime Minister was a Lord Commissioner of the Treasury, prior to the reform he had had ex officio oversight of these portfolios, but it was felt more proper for the civil service to be held outside of a particularised department. Nevertheless, in recognition of the primary authority of the Prime Minister over the Civil Service, it is a constitutional convention that the Ministry would always be held by the Prime Minister. Though the Civil Service Department was abolished by Margaret Thatcher in 1982, the title was retained. Whereas the First Lordship of the Treasury has been a complete sinecure for some time, the functions of