Frederick ALLEN, born Ireland Dec. 17, 1782 Died May 7, 1856 Came from Ireland, spent several years in North Carolina before settling in Southern Illinois, Married Hannah Harris October 20,1840 in Williamson Co.
3 Children; Randall ALLEN, William Spencer "WS" ALLEN, John Henry ALLEN
I have information on his descendants- don't know if this is the Allen split that you have- don't have anything farther back. There was one other Allen settler in S.I. then "Willis Allen" No relation