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Derbyshire town, Old English Cesterfelda, literally "open land near a Roman fort," from ceaster "fort" (see Chester) + feld "open land" (see field (n.)). The cigarette brand was named for Chesterfield County, Virginia, U.S. As a kind of overcoat and a kind of sofa (both 19c.), the name comes from earls of Chesterfield. Philip Stanhope, the fourth Earl of Chesterfield (1694-1773) was the writer on manners and etiquette.