Anne Montagu, Viscountess Mandeville, was the daughter of Robert Rich, 2nd Earl of Warwick, an English colonial administrator who opposed the policies of Charles I prior to the English Civil War. In 1625 she married, becoming the second wife of Edward Montagu, 2nd Earl of Manchester, a senior commander of Parliamentary forces during the English Civil War. She had three children by Montagu; her son Robert would later become the 3rd Earl of Manchester. Anne Montagu died a year or two before her fortieth birthday, shortly before the Civil War began.