Individual Details
Living
( - )
Families
| Father | Howard Alton McMahan (1934 - 2006) |
| Mother | Sharon Jean McHugh (1938 - 1994) |
| Sibling | Howard Alton McMahan Jr. (1957 - 1979) |
| Sibling | Pamela Diane McMahan (1958 - 1958) |
| Sibling | Michael Wayne "Petey" McMahan (1959 - 2000) |
| Sibling | Living |
| Sibling | Living |
| Sibling | John David McMahan (1963 - 1963) |
| Sibling | Pauline June McMahan (1964 - 2005) |