This is Keziah (Macomber) Devol, widow of Jonathan5(Jonathan4-2, William1) Devol. She was born ca1736 (per IGI) and was the daughter of Matthew4(William3-2,John1) Macomber and Elizabeth3(Stephen2, Thomas1) Manchester. She married Jonathan Devol in 1761 and they had two children, William and Abner. I have no information on whether she and Walter Moon had any children. Her granddaughter, Phebe (Devol) Hoxie, once occupied a house across the street from where I grew up in Little Compton and where my mother still lives.
Her father, Jonathan Devol, lived in the same neighborhood (Tiverton Four Corners) as someone else I see you're looking at, Pardon Wilcox. I'll post some information on the Wilcox forum within the next few days.
My source is Benjamin F. Wilbour's "Little Compton Families."