I have extensive information on our Sullivan Line. My great grandfather was Elias Flynn Sullivan. His parents were William Sullivan and Seletha (Letha). Their
Elias Sullivan's sister, Sarah Martin Sullivan married Jesse Walling, son of John John Chisum Walling. Their children are Charles Quitman, Quincy Warren, William edgar, Charles Harris, Annie Lee, Myrtle, and John Chisum.
This is just a glimmer of information that I have.
Children of William and Seletha were James Franklin, John F. William Henry, George Riley, Polly Ann Amanda, Sarah Martin, Marion W., Nancy L., Mary A. and Elias Flynn.
Elias Flynn married Nancy Jane Todd. Her parents were Andrew Jackson Todd and Martha Ann Walling. Jesse Walling and Sarah Parker were her parents.
I recently was given info that Sarah Parker was killed an scalped by Indians. But, I cannot confirm this.