Individual Details
Living
( - )
Families
| Spouse | Anthea Zara ALFORD BEd (1946 - 2021) |
| Child | Jason Matthew UNDERWOOD (1971 - 1991) |
| Child | Living |
| Spouse | Stanislawa "Stasia" SWIGON (1949 - 2025) |
| Child | Living |
| Child | Living |
| Father | Alan UNDERWOOD (1915 - 1995) |
| Mother | Agnes Kate "Katie or Kit" HOARE (1915 - 1996) |
| Sibling | Living |