This article examines the life of Lady Elizabeth Anson (1725–60), daughter of Philip Yorke, 1st earl of Hardwicke, and the wife of Admiral George Lord Anson, first lord of the admiralty. Using a sample of her letters, this article argues that Lady Anson engaged with letter-writing as an inherently political activity. Previous studies of Lady Anson’s correspondence have emphasized her role in the Yorkes’ political network, but this article foregrounds her marriage to Lord Anson and her life at the admiralty. In a marriage shaped by the strains of naval service, Lady Anson used her talents as a letter-writer to establish a role for herself as her husband’s political partner. Building on the work of Elaine Chalus, Judith Lewis, and Sarah Richardson, this article explores the ways in which Lady Anson used letters to disseminate intelligence and negotiate patronage. It examines her friendship with the powerful admiralty secretary, John Cleveland, and considers the ways in which her physical proximity to the admiralty office gave her privileged access to the inner workings of the Royal Navy. Consequently, her writing provides important insights into the ways in which elite women could use letters to establish their own political authority.