I know it has been a long time since you have posted this, but I have a Thomas Briggs b. 1725.His parents are James Briggs and Hannah Hill.I show he has one brother, Nathan Briggs.I have no other dates for these persons.
Thomas Briggs b. 1725---has a child, Thomas Briggs b. Bet. 1771-1774.No mother is listed for this child.
This second Thomas Briggs had two wives; 1. Esther Parks, 2. Nancy Hale.I have more of this line.Does this match anything that You have?Let me hear back from you.