| Descent |
| Thomas Cassingham (Sr.) |
| Elizabeth A. (Cassingham) Linton |
| Thomas Cassingham Linton |
| William Howard Linton |
| Velmer Viola (Linton) Volz |
| Florence Lucille (Volz) Kopp |
| Edna Jean Kopp |
Edna Jean Kopp is the daughter of Florence Lucille Volz and William F. Kopp.
She married William Earl Kufahl.
Children of Edna Jean Kopp and William Earl Kufahl:
- James Alan Kufahl married Debra Radlof.
- Jean Marie Kufahl