The son of Winter Hill Gang hit man John “The Executioner” Martorano is facing armed robbery, assault and domestic violence charges stemming from assaults on his wife and a random stranger, as well as car theft during a five-day period, police and prosecutors said. “I had taken several blows to the head and was choked repeatedly,” Vincent Martorano’s wife, Dina, told Saugus officers hours after the couple fought the night of May 9 in Room 24 of the Avalon Motel on Route 1, according to her statement. Investigators said in their report, “She stated that she was afraid of him...