Are you still seeking information? Margaret Jane Allen is the sister of my ancester, James Madison Allen. Their parents are Benjamin B Allen and Frances "Frankie" Boman.
I don't know Benjamin's parents, but Frankie's parents are Lorenzo Dow Boman and Nancy Baker(supposed to be 1/2 Indian)
The Allen story is that the Allens came from Wales. Benjamin and Frankie lived in LimRock, Jackson County, alabama.
I am a descendent of the line that came to Texas.