Regarding the whole, Locke's dad is the same guy that scammed Saywer's (James Ford's) mother; I would say that we can be 99% certain that he is based on this information I found on the Lostipedia:
Quote:
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...Cooper has some connection to Sawyer (and the original Sawyer), since his two names that we know of, "Anthony Cooper, Adam Seward" is an anagram for "Sawyer, the con man, a poor dad."
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Linky
It seems pretty unlikely that a 24 letter anagram just 'slipped in.'