Her name was Phebe Gould/Gold dau. of Jacob Gould and Phebe Parker.Their marriage record and her death certifcate images are online as noted - can be saved, printed etc. His death record image is not online.
United States Census, 1880Boston, Suffolk, Massachusetts
selfIssackar LangleyM 60 NH/NH/NH wifeMary E. Langley F 49 VT/NH/VT
Massachusetts, State Census, 1855Stoneham, Middlesex
Issachar W. Langley titles & terms:shoemaker Marriage01 Jan 1844 : Stoneham, Massachusetts OfficialRev WM or MM Ferwald. Male marriage registration year: 1844 marriage registration place: Stoneham, MA spouse: Phoebe E. Gould
Massachusetts, Deaths and Burials, 1795-1910
https://familysearch.org/pal:/MM9.1.1/FHCM-62G Issachar W. Langley Male death11 May 1886 age: 66 birth date: 1820 father's name: Samuel mother's name: Betsey
Phebe E Langley(**** Image online) Death04 Apr 1910 : Plastow, NH residence: Stoneham, MA Female White Widowed Death age 85 yrs 6 mos I day birth date: 1825Stoneham, MA burial date: April 7, 1910 burial place: Stoneham, MA cemetery:Lindwood Cemetery father: Jacob Gould birthplaceStoneham, MA mother: Pheobe C Parker birthplace Stoneham, MA spouse: Issachar W Langley