This William Allen is my ancestor. I live in Oregon County, MO, just north of Mammoth Spring.My parents live on a portion of his original homestead. I only have information about him after he moved here. I'm looking for prior info.Another relative of his that moved here about same time was Larkin Allen (buried in Hatfield Cemetery, Howell County, MO, just west of us). Let me know if you want any later info. We thought he came here from TN. Didn't know about St. Louis.