There is also a "Stevens" line in Madison County that is no connection to the Stephens line. I believe the line begins here with Joshua Stevens & Catherine Redmond. However SOME of the Stephens line, such as Warren William Stephens who was the son of Nathan (my 4th great grandfather) and Nathan was the grandson of Jacob Stephens. Warren and his descendants spelled their last name as Stevens.
It is always best to check which line they come from before assuming anythings. The Jacob Stephens line is pretty well documented from Geraldine Smith's work.