Hello Janet, Your Jacob Briggs, to the best of my knowledge, was a brother to my Elias Briggs(b.c. 1798 allegedly in VA).My Elias Briggs moved on to Scott Co. IN where he marriedJenny Rose in 1823 and then moved on to settle in Schuyler Co. IL, dying there in 1856.Jacob and Elias also had these sisters:Fanny/Frances, Nancy, and Elizabeth as well as another brother named John, of whom I know nothing.
Another cousin and I have been looking for descendants of Jacob and Elias so we could hopefully figure out exactly the name of their parents.....UNVERIFIED information CLAIMS that Jacob and Elias's father was a James Briggs, however, at present, I can't say that there is much more to prove that than the 1850 census of Greenup Co. KY, where, as you probably know already, there was a James Briggs age 87, living with a Jacob Briggs(presumeably, your Jacob).
Anyway, since I seldom find a Briggs cousin who has an interest, I was hoping that you might still be working on this line and be able to help.Looking forward to hearing from you!!!! Regards, Larry D.H. Coats