HEFFERNAN, Dorothy M. (Mahon). Of Brookline on January 20, 2018. Beloved wife of the late Paul L. Heffernan. Loving mother of Debra L. Heffernan of Wakefield, Kim A. Wilson and husband Richard of Newton, Kevin P. Heffernan and wife Anne of Essex, Kelly J. Heffernan of Burlington, Joan M. Brock and husband John of Beverly, Thomas P. Heffernan, Sr. and wife Eileen of Walpole and Brian M. Heffernan and wife Leeann of Bridgewater. Cherished grandmother of Madeline Lanciloti, Anna and Luke Heffernan, Katelyn and Emily Lorrey, Nicole Mitchell, Claudia and Michael Brock, Thomas Jr., Paul, Grace and Faith Heffernan and Peggy and Mary Heffernan. Dear sister of Pauline Mahon-Stetson of Reston, VA., Claire Langdon and husband Thomas of Marshfield and the late Carol Riley and Donna Bradley. Also survived by many nieces and nephews. Funeral from the Bell-ODea Funeral Home, 376 Washington St., Brookline, Tuesday morning at 9:10 followed by a Funeral Mass in St. Lawrence Church, Chestnut Hill at 10:00. Relatives and friends are kindly invited. Visiting hours in the funeral home on Monday from 3:00 - 7:00. Interment St. Joseph Cemetery. In lieu of flowers donations made to the Alzheimers Assoc. of Eastern Mass. 309 Waverly Oaks Rd., Waltham. MA. 02452 or www.alz.org would be appreciated. Lifelong Parishioner St. Lawrence Church, Ret. Secretary to the Superintendant of Brookline Schools, Former TMM Pct 14.