My great grandfather Daniel Thomas, is listed as being born after his Mother's husband (Aaron Thomas) presumably died. The only name on his birth certificate is his Mother's, Jane (Browning) Thomas. One story is that he left her after returning from the war, one was he never returned after war, one was that he came home and died shortly after. I believe she received his pension, so I tend to think the latter is correct. No matter how, Aaron is not on Daniel's birth certificate. Should I still list Aaron on the family tree, with notes? Or does that line stay blank? Daniel did carry the Thomas name, as that was his mother's married name.