It is not clear how this Isaac Newton of Pomfret (#1653 in Newton Genealogy) could be the son of Isaac Newton (#1648 in Newton Genealogy) since their birth years appear too close together.
Probably he was Isaac Newton (#192 in Newton Genealogy) son of Asahel Newton (#168 in Newton Genealogy) and Sarah Beebe born 17 Sep 1767 at Colchester, CT.