William Thomas Cavendish (1843-1878) (1843–1878) Parents Elizabeth Maria Margaret Hart Hon. Richard Cavendish Children Frederick William Lawrence Shepperd Hart Cavendish Henry Cavendish, 6th Baron Waterpark Elizabeth Mary Cecilia Cavendish Siblings Marianne Cavendish Elizabeth Dorothy Cavendish Catherine Elizabeth Cavendish unknown daughter Cavendish Charles Tyrell Cavendish Cecilia Augusta Cavendish unknown son Cavendish Emily Maria Georgiana Cavendish Partners Cecilia Lafayette Kennedy