Casey, Mary C. (Carroll), a lifelong Lexington resident, July 21, 2019, age 101. Beloved wife of the late Joseph E. Casey. Loving mother of Maureen O'Sullivan and her husband Gene of Chelmsford, Richard Casey and his wife Shelley of Newport, NC, the late Den n is Casey and his surviving wife Jackie of Chelmsford, and the late Michael Casey. Mary is also survived by 8 grandchildren, by 18 great grandchildren, and by many nieces and nephews. A Memorial Mass will be held Thursday July 25 at St. Brigid Church, 2001 Mass. Ave. Lexington at 10am. Visitation at the Douglass Funeral Home, 51 Worthen Rd. Lexington also on Thursday, immediately prior to the Mass, from 9am to 9:45am. Relatives and friends are kindly invited. Interment to follow the Mass at Westview Cemetery, Lexington. The family wishes to extend their deep appreciation to Dr. Connie Chen and the Lexington Fire Dept., and to Care Dimensions in Lincoln who cared for Mary in her final week.  In lieu of flowers, donations in her memory may be made to Care Dimensions Hospice House, 125 Winter St. Lincoln, MA 01773.