The census taker almost always spelled the name the way it sounded to him, so variations are possible.

River towns tended to attract younger single men who had a trade or profession, and many came from outside the state and even the region. This man is older, but he had a trade, and there could be any number of reasons that he might want to "disappear" and set up shop in a completely different area.

A book by a Confederate veteran who served in an Alabama unit happens to mention that he moved from Pennsylvania in late 1860. It's not unheard of.

As Aunt PittyPat said, "Yankees in Georgia! How did they ever get in?"