Anne Lennard, Countess of Sussex, formerly Lady Anne FitzRoy, was the eldest daughter of Barbara Villiers, mistress to King Charles II. She became the wife of Thomas Lennard, 1st Earl of Sussex.
Born Lady Anne Palmer in Westminster, she was the first child of Barbara Villiers, the only child of William Villiers, 2nd Viscount Grandison, and the wife of Roger Palmer, 1st Earl of Castlemaine, who was also one of the mistresses of King Charles II. According to legend, Anne was conceived on the night of Charles's coronation. Both Villiers and the king acknowledged Anne as his daughter, and she was therefore known by the alias of Fitzroy, meaning "son of the king," but she has also been suggested as the daughter of Philip Stanhope, 2nd Earl of Chesterfield, "whom," says Lord Dartmouth, "she resembled very much both in face and person."