Robert Craggs-Nugent, as he then was, served as a Lord of the Treasury from 1754 to 1759, and was made a Privy Counsellor on 15 December 1759. He was Vice-Treasurer of Ireland from 1759 to 1765, First Lord of Trade from 1766 to 1768, and Vice-Treasurer of Ireland again from 1768 to 1782. In 1768 he was made a member of the Irish Privy Council. His support of the ministry was so useful that he was created in 1767 Baron Nugent and Viscount Clare, and in 1776 Earl Nugent, all Irish peerages.