Ephraim Sanford's will dated 30 Jan 1761; distribution 1763; widow Elizabeth; sons John, Oliver, Ephraim, Augustus; daus. Elizabeth wife of Jonas Platt, Rachel wife of Stephen Mead, Abigail wife of Daniel Jackson, Hannah wife of David Lyon, Lois wife of Joseph Lyon, Tabitha and Huldah Sanford. Abigail, b. 10, bapt. 18 May 1735; m. 2 Oct. 1755, Daniel Jackson
Jackson, Artemese, d. [Daniel], b Mar 12, 1771 Jackson, Asel, s. [Daniel], b Apr 22, 1774 Mary, d. [Daniel], b May 8, 1772; d. June 26, 1773
This source does not name the mother of these children. We know Daniel's wife but do not have a date of death for her. So until better info is available, it will be assumed their mother is Daniel's known wife, Abigail Sanford.