| Descent |
| Thomas Cassingham (Sr.) |
| Ford Cassingham |
| George Washington Cassingham |
| Elizabeth Margaret (Cassingham) Weber |
| Irene Rose (Weber) Birkle |
| Dale Lee Birkle |
Dale Lee Birkle is the son of Irene Rose Weber and Victor Birkle. He was born in 1954 in Montana.
In 1976, he married Betty Jean Miller in Wyoming. She was born in 1956 in Iowa.
Children of Dale Lee Birkle and Betty Jean Miller:
- Tonya Jean Birkle was born in 1978 in Wyoming. In 1998, she married Marty Allen Kemp. He was born in 1975 in Montana.
- Peggy Sue Birkle was born in 1981 in Wyoming.