John Mordaunt, 1st Earl of Peterborough English peer (1598–1644) Parents Henry Mordaunt, 4th Baron Mordaunt Margaret Compton Children Lady Sophia Mordaunt Lady Elizabeth Mordaunt John Mordaunt, 1st Viscount Mordaunt Henry Mordaunt, 2nd Earl of Peterborough Siblings Frances Mordaunt Partners Elizabeth Howard, Countess of Peterborough
