Lord Chesterfield brought him into the secretary of state's office as a law clerk in 1747 and he held the position until 1774. From 1757 to 1763 Stanhope was an agent for Jamaica and he became gentleman usher to the Queen in 1761. Lord Halifax appointed him under-secretary in 1764, but he resigned in 1765 when the Duke of Grafton demanded his full-time attention in the office. He was re-appointed under-secretary by Lord Halifax again in January 1771 but retired in March with a pension.[1]