From Newbury VR, we know that https://www.geni.com/people/Josiah-Chandler married "Sarah Parker, wid., both of Andover, July 1, 1735."
From Andover VR, we know that Benjamin Parker died Dec. 21, 1732, in his 40th y. Andover VR has his marriage to "Sarah Chadwick [of Boxford. int.], Sept. 19, 1727."
Is she the widow Parker that married Josiah Chandler? There are no other males named Parker that died, in Andover, after Benjamin before the marriage of Josiah and Sarah.