Nancy was the daughter of Phillis Smith and Ralph Way, Jr. of Hadley, Massachusetts. The Ways had two children- Phillip, born in 1766 and died in 1768, and Nancy, born in 1768. Phillis might have died birthing Nancy, or soon after, as Ralph remarried in 1769.
Sources Consulted
History of Hadley, Massachusetts, Sylvester Judd, 1905, p. 150