DART, Mary R. (Heanue). In Dorchester, March 9th. Beloved wife of the late Joseph A. Loving mother of Joseph A. Dart of Huntington, Maureen R. and her husband Edward J. Szymczak of Marblehead, and John T. and his wife Joanne E. Dart of Kingston. Sister of the late John W. Heanue, Julia M. Cosgrove, and Thomas J. Heanue. Devoted grandmother of David S. Dart, Eric J. and Adam E. Szymczak, Meghan E., Sean M., and Kevin J. Dart. Survived by several nieces and nephews. Visiting hours in the Murphy Funeral Home, 1020 Dorchester Ave., DORCHESTER, Sunday 4-8 P.M. Funeral Mass in St. Margaret Church of Blessed Mother Teresa Parish, 800 Columbia Rd., Dorchester, Monday morning, March 13, at 10 A.M. Relatives and friends invited. Late retired secretary at Abbot & Hall Food Brokerage Co. and insurance adjuster for Crum & Foster Insurance Co. for many years. Donations in her memory may be made to the Alzheimer's Association, 36 Cameron Avenue, Cambridge, MA 02140. Interment in Cedar Grove Cemetery, Dorchester.