If you are still searching, Ashland, KY library has a book on the Crank family. I am your Dad's cousin, Gary, and have copies of the pertinent information from that book I would be glad to share if you still want or need it. My biggest problem (other than time) is Great Grandpa Frank Thompson. I find some info on Sarah Knipp,great grandma, but nothing on him. Let me know if what I have will help.