| Descent |
| Thomas Cassingham (Sr.) |
| Elizabeth A. (Cassingham) Linton |
| Thomas Cassingham Linton |
| William Howard Linton |
| Velmer Viola (Linton) Volz |
| Florence Lucille (Volz) Kopp |
| Betty Jane Kopp |
Betty Jane Kopp is the daughter of Florence Lucille Volz and William F. Kopp.
She married Clifford Johnson.
Children of Betty Jane Kopp and Clifford Johnson:
- Brian Lee Johnson
- He married (1) Theresa Rose Crawford.
- He married (2) Lori J. Boyle.
- Scott Allen Johnson
- Douglas Fredrick Johnson