| Father | John MASON ( - 1900) |
| Mother | Elizabeth (Lizzie) Anne HUGGARD (1832 - 1915) |
| Sibling | John George MASON (1853 - 1885) |
| Sibling | Maria L. A. MASON (1855 - 1956) |
| Sibling | Elizabeth Bridget MASON (1859 - ) |
| Sibling | Agnes MASON (1861 - 1865) |
| Sibling | Amelia MASON (1865 - 1901) |
| Sibling | Richard Huggard MASON (1866 - 1903) |
| Sibling | Elizabeth MASON (1867 - 1901) |
| Sibling | Edward A. MASON (1868 - 1903) |
| Sibling | Kate MASON (1869 - 1901) |
| Sibling | Thomas Oliver MASON (1870 - 1906) |
| Sibling | William MASON (1874 - 1874) |
| Sibling | Francis (Frank) John Boyle MASON (1875 - 1924) |