| Descent |
| Thomas Cassingham (Sr.) |
| Ford Cassingham |
| George Washington Cassingham |
| Elizabeth Margaret (Cassingham) Weber |
| Irene Rose (Weber) Birkle |
| Terry Ann (Birkle) Boyle |
| Shawna Rae Boyle |
Shawna Rae Boyle is the daughter of Terry Ann Birkle and Gene Ellis Boyle. She was born in 1983 in Wyoming.
In 2007, she married Monty Stringham.
Children of Shawna Rae Boyle and Monty Stringham:
- Aleigha Montana Stringham was born about 2004 in Wyoming.