Children of Abraham Foster and Abigail Parsons: Sarah, m. (1) John rust, m. (2) Jacob Parsons.
↑ Sarah, the wife of John Rust, is named in her father's probate. She is named after Abigail, birth unknown, and before Abraham, b. 1716. Her marriage is in 1730, so probably born by 1710. Neither Sarah or Abigail have known births, but there are really only two gaps between other births, 1702-1706, and 1706-1709. Because she appears younger than Abigail, she is put into the second gap, so born about 1708. This is a guess.
↑ Sarah is named in the will of Jacob Parsons of Gloucester, dated 20 Feb 1784 [Essex probate 20603]. She may be the Sarah Parsons who death is record in Gloucester VRs, p. 3:234: "PARSONS, Sarah, [died] Jan. 2, 1792. CR5". CR5=Fifth Parish, at Sandy Bay. There is not enough identifying information given to be sure.