There is a Jeptha Wright b.1804 in the HISTORY OF WESTFORD< MA.by Rev. Edwin R. Hodgman, A.M. 1659-1883. The Wrights were founding members of Woburn and Westford, Ma.and go back to 1630. Many of their descendants moved to N.H. I would try Woburn and Westford Historical societies, and ask the Woburn Chat line if they know more about this family.