Frederick Spencer, 4th Earl Spencer

Vice-Admiral Frederick Spencer, 4th Earl Spencer, KG, CB, PC, styled The Honourable Frederick Spencer until 1845, was a British naval commander, courtier, and Whig politician. He initially served in the Royal Navy and fought in the Napoleonic Wars and the Greek War of Independence, eventually rising to the rank of Vice-Admiral. He succeeded his elder brother as Earl Spencer in 1845 and held political office as Lord Chamberlain of the Household between 1846 and 1848 and as Lord Steward of the Household between 1854 and 1857. In 1849, he was made a Knight of the Garter.