Donahue, Mary (Heaney) of Lexington and Mashpee. Age 90, died peacefully on July 22.  Wife of the late William T. Donahue.  Mother of Kevin W. (& wife Wendy) of Westboro, Carol M. Donahue Donaldson (& husband Steve) of Seattle, WA, James P. (& wife Jennifer) of Hopkinton, and the late Paul M. (& surviving wife Mary) of Lexington.  Sister of the late Grace Kenney of Lexington, the late Joseph Heaney of Mt. Vernon, NH, and Eileen Halloran of Durham, NH. Mary is also survived by 13 grandchildren, and 5 great grandchildren, and many nieces and nephews.  Graduate of Lexington H.S., and Chandler Secretarial School. Began her secretarial career at Hale & Dorr. Was a devoted homemaker and worked for years in a number of administrative support positions. Longtime member of St. Brigid's Couple's Club. Visiting hours will be held Tuesday July 25 at the Douglass Funeral Home, 51 Worthen Rd. Lexington from 4pm to 7pm, and a Mass of Christian burial will be celebrated Wednesday July 26 at St. Brigid Church, 2001 Mass. Ave. Lexington at 10am. Relatives and friends are kindly invited. Donations in her memory may be made to Rosie's Place, 889 Harrison Ave. Boston, MA 02118. Interment Westview Cemetery, Lexington.