I have some info on a John Dotson family that lived in Monroe/Noble Co, OH.I realize that this is not your direct line but I thought they might well be related considering the birthplace and the names of the children.
In 1850 census I found John Dotson age 25 b MD with wife Margaret 20 b OH and William 1 b OH.They are living next to my ggg grandparents William and Nancy Casey.In 1860 the Dotson family has expanded now with John 35,Margaret 30, William 10, James(age?) Rebecca 8 and Martha 4.They are still living next to William and Nancy Casey.By 1870 William Casey is dead and James Dotson 17 and Martha Dotson 13 are living with Nancy Casey. One assumption is that John and Margaret Dotson are also dead.I haven't researched this yet.In 1880 James Dotson 27is a School teacherand listed as grandson living with Nancy Casey.This makes me think that Margaret Dotson, the wife of John could well have been the daughter of William and Nancy Casey.I don't know the maiden name of Nancy Casey.
Please contact me if you would like to discuss this. Chris