The Lennox sisters were eighteenth-century British aristocrats, the daughters of Charles Lennox, 2nd Duke of Richmond (1701–50) and his wife the former Lady Sarah Cadogan (1705–1751). Four sisters — Caroline (1723–74), Emily (1731–1814), Louisa (1743–1821), and Sarah (1745–1826) — married prominent men and attracted varying degrees of admiration or notoriety. A fifth sister died aged 19, and two others in infancy.