Individual Details
Robert Irvine Anthony Mason
( - )
Families
| Spouse | Katherine Sybil Carey (1929 - 1984) |
| Child | Horatio Pleasants Mason |
| Child | Charlotte Reed Mason |
| Father | Horatio Pleasants Mason III |
| Mother | Caroline Belle Webb |
| Sibling | Caroline Justice Mason (1922 - 2005) |