1857 - 1930 (73 years)
| John B McCosker | |
| B: | 1884 |
| Newtown, New South Wales, Australia | |
| D: | 1884 |
| Newtown, New South Wales, Australia | |
| Mary S McCosker | |
| B: | 1888 |
| Newtown, New South Wales, Australia | |
| D: | Yes, date unknown |
| Rose McCosker | |
| B: | 1891 |
| Newtown, New South Wales, Australia | |
| D: | Yes, date unknown |
| Rosannah Larkin | |
| B: | 1857 |
| Glebe, New South Wales, Australia | |
| D: | 1930 |
| Singleton, New South Wales, Australia | |
| Cornelius Joseph McCosker | |
| B: | 1859 |
| Singleton, New South Wales, Australia | |
| M: | 1883 |
| Newtown, New South Wales, Australia | |
| D: | 1945 |
| Sydney, New South Wales, Australia | |
