| Spouse | Catherine (Kate) MCENERY (1881 - 1950) |
| Child | Denis O'FLAHERTY (1902 - 1940) |
| Child | John (Jack) Stephen O'FLAHERTY (1903 - ) |
| Child | Michael O'FLAHERTY (1905 - ) |
| Child | James (Jim) O'FLAHERTY (1907 - 1964) |
| Child | Julia O'FLAHERTY (1908 - ) |
| Child | Mary O'FLAHERTY (1909 - 2006) |
| Child | Helen (Nell) O'FLAHERTY (1911 - 1998) |
| Child | Edward (Eddie, Ned) Joseph O'FLAHERTY (1912 - 1979) |
| Child | Johanna (Hannah) O'FLAHERTY (1914 - 1999) |
| Child | Cornelius (Con) O'FLAHERTY (1915 - 1992) |
| Child | Bridget (Bridie) O'FLAHERTY (1918 - 2000) |
| Child | Margaret (Peg) O'FLAHERTY (1920 - 2015) |
| Child | Hanora (Nora) O'FLAHERTY (1921 - 2018) |
| Child | Catherine (Cathy) O'FLAHERTY (1922 - 2018) |