MAYO, Sarah, w. John, [died] Oct. 22, 1803. Fever. [a. 52, GS] [Birth about 1751]
Given her description as "of Needham", a possible candidate is Sarah Day, d/o Jonathan Day and Hannah Battelle, b. Dedham, 1 Sep 1751. But there are other Sarah Days born about this time, and it will require more in-depth research to identify her reliably.