Lady Elizabeth was born in May 1663 at Bretby, Derbyshire, England, the daughter of Philip Stanhope, 2nd Earl of Chesterfield and Lady Elizabeth Butler, eldest daughter of James Butler, 1st Duke of Ormonde. Her paternity was in doubt as despite her putative father's own licentious conduct, having been the lover of the notorious Barbara Villiers, mistress of King Charles II of England, he believed that Elizabeth was not his daughter. Prior to _her_ birth, Samuel Pepys alleged that Elizabeth's mother, tired of her husband's neglect of her in his pursuit of Barbara Villiers, had had affairs with both James Hamilton and James, Duke of York, who would later rule as King James II of England. <sep>, Pronoun: her <sep>, A: Barbara Villiers <sep>, B: Elizabeth