| Descent |
| Thomas Cassingham (Sr.) |
| Thomas Cassingham (Jr.) |
| Harriet (Cassingham) Butler |
| George Baxter Butler (Sr.) |
| Lawrence George Butler |
| Joan Charlotte Butler |
Joan Charlotte Butler is the daughter of Lawrence George Butler and Charlotte Grace Paige. She was born in 1931 in Wisconsin.
In 1954, she married Howard Vanlare Hart in Wisconsin. He was born in 1930 in Wisconsin.
Children of Joan Charlotte Butler and Howard Vanlare Hart:
- Charles Howard Hart was born in 1965 in Wisconsin.
- Sarah Joan Hart was born in 1967 in Wisconsin.