1896 - 1966 (70 years)
| William John Cosgrove 1921-1978 |
| William John Cosgrove | |
| B: | 18 Nov 1921 |
| Bathurst, New South Wales, Australia | |
| D: | 9 Oct 1978 |
| Caringbah, New South Wales, Australia | |
| Ernest Wynter Cosgrove 1923-2003 |
| Ernest Wynter Cosgrove | |
| B: | 11 May 1923 |
| Bathurst, New South Wales, Australia | |
| D: | 10 Jan 2003 |
 | Clarice Elizabeth Shannon 1928-1995 |
| Clarice Elizabeth Shannon | |
| B: | 14 Mar 1928 |
| Ulmarra, New South Wales, Australia | |
| M: | 3 Apr 1948 |
| Burwood, New South Wales, Australia | |
| D: | 10 May 1995 |
| William Michael Cosgrove 1896-1966 |
| William Michael Cosgrove | |
| B: | 27 Jan 1896 |
| Bathurst, New South Wales, Australia | |
| D: | 19 Dec 1966 |
| Enfield, New South Wales, Australia | |
| Isa May Saunders 1893-1973 |
| Isa May Saunders | |
| B: | 26 Mar 1893 |
| Woods Reef, New South Wales, Australia | |
| M: | 7 Apr 1920 |
| Sydney, New South Wales, Australia | |
| D: | 30 Nov 1973 |
| Enfield, New South Wales, Australia | |
