Norton of Cambridge, April 14, 2011, Margaret M. (Cusack) Norton, age 90. Beloved wife of the late John J. "Midge" Norton. Devoted mother of Mary Martin of Cambridge, Peggy Silverio and her husband Joe of Stoneham, and John J. Norton, Jr. of Stoneham. Sister of Thomas Cusack of Somerville and the late John Cusack, Mary McMahon, James Cusack, Joseph Cusack, and Alice Shannon. Loving grandmother of Allen and Deborah Martin, Makenzie Silverio, and Jaquilyn Norton. Also survived by many nieces and nephews. Funeral from the John C. Burns & Sons Funeral Home, 305 Broadway, Cambridge, Tuesday, April 19, at 9:00 a.m. followed by a funeral mass in St. Mary's Church, Cambridge, at 10:00 a.m. Relatives & friends invited. Visiting hours, Monday, April 18 from 3:00-7:00 p.m. Memorial contributions may be made in Margaret's name to St. Mary's Memorial Fund, 134 Norfolk St., Cambridge, MA 02139. Member of St. Mary's Sodality and lifelong parishioner. Interment, Mount Auburn Cemetery, Cambridge.