Isabella Markham (28 March 1527 – 20 May 1579), was an English courtier, a Gentlewoman of the Privy Chamber of Queen Elizabeth I of England and a personal favourite of the queen. Isabella Markham was muse to the court official and poet John Harington (c.1529 - 1582), who wrote sonnets and poems addressed to her, before and after they married. Thomas Palfreyman dedicated his Divine Meditations to her in 1572.[1][2]