John BROCK - is either Sr. (1800) or Jr. (c1823-30) Larrance BROCK - ?? John Franklin DAVIS - md. daughter of John Sr. William DOTHARD - I have several DOTHARD/DOUTHARD siblings with UNK names. I have a "Billy" (c1809-20 Ireland) that I've not traced. He is probably the following William, who is probably the William mentioned in your probate records.
1850 Benton/Calhoun census: DOTHARD, William p328 Jacksonville 72nd Regt.