Individual Details
Living
( - )
Families
| Spouse | Living |
| Father | Walter Joseph "Walt" GRETHEN (1922 - 2014) |
| Mother | Nanhild Ebba "Nan" HOLMBERG (1919 - 2013) |
| Sibling | Living |
| Sibling | Living |
| Sibling | Kay Theresa GRETHEN (1955 - 2024) |
| Sibling | Living |
( - )
| Spouse | Living |
| Father | Walter Joseph "Walt" GRETHEN (1922 - 2014) |
| Mother | Nanhild Ebba "Nan" HOLMBERG (1919 - 2013) |
| Sibling | Living |
| Sibling | Living |
| Sibling | Kay Theresa GRETHEN (1955 - 2024) |
| Sibling | Living |