Frederick Cavendish (1777-1856) (1777–1856) Parents Sarah Cavendish, 1st Baroness Waterpark Sir Henry Cavendish, 2nd Baronet Children John Arthur Cavendish Alexander Macdonnell Cavendish Catherine Elizabeth Cavendish Eleanor Cavendish Louisa Sophia Cavendish Richard Augustus Cavendish Sarah Anne Cavendish Frederick Cavendish Siblings Richard Cavendish, 2nd Baron Waterpark Anne Cavendish Augustus Bradshaw George Cavendish Sarah Cavendish Deborah Cavendish Catherine Cavendish Partners Agnes Catherine Macdonnell Lady Eleanor Gore