My husband and I have been split up for over twenty years. We are finally trying to get a divorce.Eight years ago I had a child with an abusive man who threatened to kill me when I tried to leave. He threatened me with a gun to the head. I thankfully got away. I am engaged to marry a great man who has always been a father to my son.can he claim paternity and keep the abuser out of my sons and my life?

No, that would be fraud. So since you asked this on a legal board, you can not have to lie on official government forms.