John Cooper denied four murder charges and separate ones of rape and attempted robbery A man has been found guilty of killing four people in Pembrokeshire in the 1980s.
John Cooper, 66, denied murdering brother and sister Richard and Helen Thomas in 1985, and Oxfordshire couple Peter and Gwenda Dixon in 1989.
Cooper, from Letterston, also denied separate charges of rape, sexual assault and attempted robbery.
The jury at Swansea Crown Court returned guilty verdicts after two days of deliberations.
Cooper shot the Thomases at their remote home near Milford Haven, Pembrokeshire.
During the interviews conducted by police in June 2008, he denied having been anywhere near Scoveston Park where the Thomases were murdered.
Mr and Mrs Dixon were shot at close range while walking the Pembrokeshire coastal path while on holiday.
The court heard he intercepted the couple in daylight, took them to a nearby hideaway and demanded details about their bank cards.
Again using a shotgun, it was claimed Mr Cooper “silenced them forever”.
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