John Sheffield, 1st Duke of Buckingham and Normanby, was a prominent English statesman and poet of the late Stuart period. He served in various high offices under several monarchs, including Charles II and Queen Anne, demonstrating considerable political skill. As a literary figure, he was a notable patron of the arts, famously supporting poets like John Dryden and Alexander Pope. His own works, such as 'An Essay on Poetry,' reflect the neoclassical tastes of the Augustan age, securing his place in both political and literary history.