Thomas Edward Thistlethwaite (January 20, 1677 or 1673 – 1733) was the 9th great-grandfather of Cometan, classified as one of Cometan’s distant paternal ancestors in the McKerney family line. Born in Dent, Yorkshire, Thomas married Isabel Willan on 20th April 1713 in Dent and raised at least one son named Christopher Thistlethwaite. It is recorded that Thomas died at the age of fifty-six in Dent, Yorkshire.
In Cometanic ancestry, Thomas is categorised as part of the 11th generation retrograde, classifying him as a distant ancestor of Cometan.