Mabel Leigh (died 1957) (1866–1957) Parents Oswald Peter Leigh Children Yvonne Cornwallis Oswald Cornwallis Bridget Frances Kate Cornwallis Fiennes Wykeham Mann Cornwallis Vere Mabel Cornwallis Wykeham Cornwallis, 2nd Baron Cornwallis Julia Dorothy Cornwallis Siblings Oswald Mosley Leigh Partners Fiennes Cornwallis, 1st Baron Cornwallis