| Father | David Edmund COTTERILL (1844 - 1925) |
| Mother | Mary Catherine QUINN (1850 - 1942) |
| Sibling | Catherine Sophia COTTERILL (1870 - 1942) |
| Sibling | Ann COTTERILL (1872 - 1942) |
| Sibling | David Lawrence COTTERILL (1873 - 1942) |
| Sibling | Maud Adelaide COTTERILL (1875 - 1942) |
| Sibling | Julia Adeline COTTERILL (1877 - 1942) |
| Sibling | George Richard COTTERILL (1879 - 1942) |
| Sibling | James Harold COTTERILL (1882 - 1942) |
| Sibling | William Napolean COTTERILL (1888 - 1915) |
| Sibling | Edward (?) COTTERILL (1890 - ) |
| Sibling | Sophia Pearl COTTERILL (1892 - 1942) |