Looking for the Crabtree Line IN KY

I have found the CRABTREE diffcult to trace. One reason is a lack of infomation. I know that two of mother's sisters married CRABTREE's that came from a different line than Dad. I was never close to my Mother's side so I have a lot of cousins that I don't their names.
My two uncle's went by their initals whitch was R.A., and H. C.