| Father | Cadogan Hodgson Cadogan (1826 - 1888) |
| Mother | Isabella Mary Smith (1825 - 1907) |
| Sibling | Arthur Hodgson-Cadogan (1849 - 1896) |
| Sibling | Mary Isabel Hodgson Cadogan (1850 - 1936) |
| Sibling | Philip Hodgson Cadogan (1854 - 1858) |
| Sibling | Paul Hodgson Cadogan (1856 - 1856) |
| Sibling | Alice Mildred Hodgson Cadogan (1858 - 1927) |
| Sibling | William Paul Hodgson Cadogan (1860 - ) |
| Sibling | Florence Octavia Hodgson Cadogan (1862 - 1924) |
| Sibling | Mabel Katherine Hodgson Cadogan (1865 - 1882) |
| Sibling | Hilda Frances Hodgson Cadogan (1867 - ) |