but you need to bear in mind that it is possible that there was another Thomas of similar age but possibly a different spelling whose baptism record has not survived.
but that person may have a surviving marriage or death record, may appear in court or land records, census or militia records etc etc.
Its a case of research each and every one of them to eliminate them from the process.
I found a grandfather through a 1782 court record where it named his father, I had his marriage, death, various other court records, militia, books and a magazine article from 1822 but no positive birth until the 1782 court record (which had been mis-filed)
