A lot of us are very willing to help, but you would have to supply a lot of information for us to do that:
The name, approximate birth date, the place of residence, and anything else you might have on your father's birth mother. And, any information you might have on her parents and grandparents.
Mostly, finding ancestors can best be done if they are in the 1940 Federal Census (or a family has bible records or other family history; or if there are birth, marriage, or death records), and then people can search backwards from there. It is never very easy. Many of us with Jackson ancestors have been told that we descend from Stonewall, but proving it is a whole other thing.