Stewart Leveson Dudley Ryder (1850-1943) (1850–1943) Parents Frederick Dudley Ryder Marian Charlotte Emily Cokayne Children Evelyn Margaret Ryder Susan Marjorie Ryder Lilian Beatrice Ryder Aubrey Leveson Dudley Ryder Helen Dorothea Wildman Ryder Siblings Marian Frances Georgiana Ryder Beatrice Mary Frederica Ryder John Edward Dudley Ryder Lionel George Dudley Ryder unknown son Ryder Frederica Constance Dorothy Ryder Hugh Cuthbert Dudley Ryder Algernon Charles Dudley Ryder Helena Augusta Cockayne Ryder Partners Anna Maria Campbell Betts