I deleted two initial posts because of the discussion about Jr. and Sr.His fsather was Tillman and I have no record of a son named William for him. Also, he spelled the name with an "a" in thre first syllable, as did his daughter-- my wife's great=grandmother. I did change his name to Martin in reviewing other records.
I don't know or care about the "more than 40 years" stuff. I've worked on the genealogy for decades, and this is my wife's great-grandfather. She got the spelling from her grandmother: It was her maiden name.