I'm great-grandaughter to Jessie Yearsley (and named after her). I would be able to give you some info about your cousins here in IL if you'd like. The Gerdes clan use to be very close to my parents and my Mom would have some fun stories. Ruth Satterfield was my great Aunt Ruth and my fathers Aunt. She was very dear to me. Her brother Emmett was my grandfather and my brother was named after him. Ruth's sister Mary to my knowledge did not have children.
If you'd like chat, let me know. You can also find me on facebook. Thanks
Jessie Yearsley Tate
Ps, if you've looked for Jessie in the trees, you had her name miss-spelled, its Jessie Edwards Yearsley.