Person:Jacob Seaman (8)

Richard Jackson, Sr. left a will dated Feb 28, 1770 and proved Mar 10, 1784. It names wife Jane, sons Richard and Jacob, grandsons Richard Jackson Seaman, son of his daughter Jane, and Micah Jackson, son of said son Richard, and granddaughter Charity, daughter of his daughter Mary. In a codicil dated Feb 10, 1783 he names grandson Jacob Jackson Seaman, son of his daughter Jane.

So it is guesstimated that Jacob was born after 1771 and before 1783. Further research is needed to confirm a better date.

1.   Bunker, Mary Powell. Long Island Genealogies. (Albany, New York, United States: Joel Munsell's Sons, 1895)
   136.