Murdered 47 years ago ‘because she was niece of killer’s ex-partner’

A sex killer raped and murdered a schoolgirl 47 years ago because she was the niece of his cheating partner, a court heard. Dennis McGrory, now 74, took out his rage on Jacqueline Montgomery, 15, and escaped justice for almost half a century until a cold case review matched his DNA to the victim’s body, the Old Bailey heard. Enraged McGrory was trying to find ex-partner Josie Montgomery, who had been having an affair with his friend John Malloy. Jacqui…