| Father | Thomas TREACY (1842 - 1914) |
| Mother | Mary MCGRATH (1844 - 1938) |
| Sibling | Nicholas TREACY (1875 - 1959) |
| Sibling | Jeremiah Joseph TREACY (1877 - 1916) |
| Sibling | Margaret TREACY (1879 - 1899) |
| Sibling | Anne (Annie) TREACY (1882 - 1940) |
| Sibling | Thomas F. TREACY (1888 - 1912) |
| Sibling | Patrick TREACY (1891 - 1910) |
| Sibling | 'unknown' TREACY ( - 1911) |
| Sibling | 'unknown' TREACY ( - 1911) |
| Sibling | 'unknown' TREACY ( - 1911) |
| Sibling | 'unknown' TREACY ( - 1911) |
| Sibling | 'unknown' TREACY ( - 1911) |
| Sibling | 'unknown' TREACY ( - 1911) |
| Sibling | 'unknown' TREACY ( - 1911) |