Mary How

Samuel Stevens and Elizabeth Barker were the parents of five children born at Andover:

i MARY STEVENS, b. 1708; d. at Middleton, 9 Mar 1752; m. at Andover, 22 Apr 1740, as his second wife, MARK HOW, b. at Boxford, 18 Apr 1701 son of John and Sarah (Cave) How; Mark d. at Middleton 1778 (probate 2 Nov 1778). Mark married first Dorothy and married third Eunice White Kinney.

Her birth is not recorded in Andover VR.

https://ma-vitalrecords.org/MA/Essex/Andover/aMarriagesS.shtml "(STEVENS (Steevens, Stephens, Steveens, Steven)) Mary, and Mark How of Middleton, Apr. 22, 1740.*"

https://ma-vitalrecords.org/MA/Essex/Middleton/aDeathsH.shtml "(How) Mary, w. Mark, Mar. 9, 1752, a. 44 y."

http://sites.rootsmagic.com/colonialgenealogy/individual.php?p=11913 has her marriage and death, and her spouse and children.