James,
I have looked at this John Milton Casey family and have them in my database; but no details other than what I found in the census report. Even though I grew up in Gallipolis, I had no idea that we could possibly have a common ancestor. I did not know I had black ancestors until my DNA results were completed in 2005. I have been working on our family history since about 1993 (after my father died, I became interested in our origins). I am going to email a couple of the pages to you with what I have on Sinclair Casey (1799-1864). I would include it on this forum, but I don't think it can be sent here due to format and size...
take care,
Lewis