Jessica Mitford, the great muckraking journalist, was part of a legendary English aristocratic family. Her sisters included nancy, doyenne of the 1920s London smart set and a noted novelist and biographer; diana, wife to...Jessica Mitford, the great muckraking journalist, was part of a legendary English aristocratic family. Her sisters included nancy, doyenne of the 1920s London smart set and a noted novelist and biographer; diana, wife to the English fascist chief sir Oswald Mosley; Unity, who fell head over in heels in love with hitler; and deborah, later the duchess of devonshire.