Lady Caroline Lamb (1785–1828)

Lady Caroline was best known for coining the phrase, "mad, bad, and dangerous to know," in describing George Gordon, Lord Byron and their tempestuous affair in 1812. She was also famous for her ability to mimic Byron's writing in poems and letters. She used that skill to respond to Byron's Don Juan I and II, which made allusions to her. Lady Caroline's husband William Lamb, whom she married in 1805 at age 19. He went on to become Lord Melbourne and then Prime Minister of Britain, although she died before that took place. She was the daughter of Frederick Ponsonby, 3rd Earl of Bessborough and his wife Henrietta, and through them related to many leading society ladies, such as her aunt Georgiana Cavendish, Duchess of Devonshire.