Leonard Allen Addington (1828-1888) (1828–1888) Parents William Leonard Addington, 2nd Viscount Sidmouth Mary Young Children William Leonard Addington Barbara Marion Addington Laetitia Anne Addington Blanche Mary Addington Maud Florence Addington Beatrice Cordelia Addington Hiley Reginald Addington Siblings William Addington, 3rd Viscount Sidmouth Caroline Penelope Addington Louisa Charlotte Addington Mary Ursula Addington unknown Addington Known Addington Frances Sophia Addington Hiley Robert Addington Charles John Addington Partners Laetitia Clark