You don't say anything about TX.Are you just guessing he might have gone to TX??Check SSDI, there is a Andrew Pool b 5 Feb 1891, d Aug 1963, SS # was issued in TENNESSEE.Now, the column that says last residence, is actually sometimes the site of final death payment, you can't rely on it being residence.This records says Alabama.If this is your guy, maybe he went to AL, or whoever took care of his final arrangements was living in AL. Might be worth checking out.Soc. Sec. should be able to tell you where he died.