I just found your message. I am beginning to research James and Sally (Garrett) Evans of Warrick County, Indiana.
I believe that Polly Ann Evans, wife of William Taylor Thompson, is the daughter of James Evans of Warrick County, Indiana. Right now, I only have a biography of W T THompson from Wapello County, Iowa to support my case. This bio is found on page 479 of the book, Portrait and Biographical Album of Wapello County, Iowa. It is available on Google Books at https://books.google.com/books?id=jVM0AQAAMAAJ
Below is a link to William Taylor Thompson in my tree:https://www.ancestry.com/family-tree/person/tree/115166653/p...
I would love to work with you to figure out this family.
mcphilbrick at gmail.com