I just found this, looks like he may have been from Washington County ALA, Williams were burried right beside him. looks like he may have been a BAMA Soldier on this below it says Benjamin F Brown was the son of AG Brown and S ANN Williams his estimated birth year is 1850 which would have made AG Brown a 23 year old father in 1850 we have this problem all the time, when looking up people in Greene County, many times they show up in Wayne, or Washington county AL as this grave was found close to Stateline MS. which sits right on the line. We have a bunch of Bama Vets burried here

https://familysearch.org/pal:/MM9.1.1/JDJV-895