My G-grandfather is the son of Daniel Samuel Walker aka Samuel Daniel. His mother was Eliza Walker. He had many siblings, but those are not any of the names among them.
The entire clan was located along southern MS.
Good luck! We know about brick walls. Daniel Walker is one such. A lot of info that he gave the census was...shall we say.... invented.
I also know about dealing with a common name. I'm searching my wife's family. Cohen. Oy vey!