DYER, Mary E. (Perry) Of Littleton, formerly of Lexington, Aug. 25, 2012. Beloved wife of the late Lawrence Dyer. Loving mother of Catherine M. Stura and her husband David of Littleton. Dear sister of Robert Perry of Rockport, John Perry of Lexington, Paul Perry of Winchester and the late James Perry. Also survived by many nieces and nephews. Funeral from the Douglass Funeral Home, 51 Worthen Rd., LEXINGTON, on Thurs., Aug. 30 at 9 a.m. followed by a Mass of Christian Burial at St. Brigid Church, Lexington at 10 a.m. Relatives and friends are kindly invited to attend. Visitation prior to the Mass from 8:30-9:45 a.m. In lieu of flowers donations in her memory may be made to the Alzheimer's Association , 480 Pleasant St., Watertown, MA 02472. Interment Westview Cemetery, Lexington.