Sounds like the proverbial block wall. Don't give up, keep digging.......
I have a list of folks that were in the book that my Mother had. It is in one of the tubs in the shed, not even going to look for it. It will turn up when we get our house done some year. It has all of the criminals on it. I believe they were the generation before my grand parents. My Dad did tell me that our last name was changed at some point due to them. If I could figure out the way they spelled there last name it might help me out.