"Mary5 (Benjamin) b. abt. 1724; m. (1) William Welles, … son of John and Mary (Judson) Welles; m. (2) Apr. 1753, Curtis Fairchild of Durham, Conn., son of Samuel and Mary (Lewis) Fairchild."
↑ Recorded age at death would indicate that Mary was born c. 1727. Since her eldest known child was born 1740, it would seem that she was probably born somewhat earlier than the c. 1724 assigned by Jacobus.