Frederick Dudley Ryder (1806-1882) (1806–1882) Parents Susan Leveson-Gower Dudley Ryder, 1st Earl of Harrowby Children Beatrice Mary Frederica Ryder John Edward Dudley Ryder Lionel George Dudley Ryder Helena Augusta Cockayne Ryder Marian Frances Georgiana Ryder Frederica Constance Dorothy Ryder Stewart Leveson Dudley Ryder Hugh Cuthbert Dudley Ryder Algernon Charles Dudley Ryder unknown son Ryder Siblings Granville Ryder Lady Georgiana Ryder Lady Louisa Elizabeth Ryder Lady Harriet Ryder Lady Mary Ryder Susan Ryder Dudley Ryder, 2nd Earl of Harrowby Partners Marian Charlotte Emily Cokayne