Helena Augusta Cockayne Ryder

Parents

• Marian Charlotte Emily Cokayne
• Frederick Dudley Ryder

Children

Siblings

• unknown son Ryder
• Beatrice Mary Frederica Ryder
• Frederica Constance Dorothy Ryder
• Marian Frances Georgiana Ryder
• Stewart Leveson Dudley Ryder
• Lionel George Dudley Ryder
• John Edward Dudley Ryder
• Hugh Cuthbert Dudley Ryder
• Algernon Charles Dudley Ryder