A KILLER who murdered his sister’s boyfriend in a brutal knife attack has been jailed for life.
John Blackburn lunged at Cole Wilson with a kitchen knife, leaving him with fatal wounds to his head and chest.
Mr Wilson, 20, who had been arguing with his girlfriend, Blackburn’s sister Jade, bled to death within minutes in the living room at a house in Peterlee, last September, a court heard.
Blackburn denied murder but was convicted by a jury after a trial at Newcastle Crown Court.
Judge Paul Sloan yesterday sentenced Blackburn to life behind bars and said he cannot apply for parole for 17 years.
As the 20-year-old was led away to start his life sentence he said “sound man” to his supporters.
Judge Sloan said he had read victim impact statements from Cole’s grieving relatives.
The judge said: “The reality is no sentence I can impose can ever be long enough to soften the pain suffered by the family and friends of the deceased.
“Their sentence will be a life sentence.”
The judge told Blackburn: “You went into the kitchen and armed yourself with the largest knife in the knife block, the blade was about 19cm.
“You returned upstairs and told your partner that you were going to ‘stab Cole’.
“That was clearly a serious threat and led to your partner begging on her hands and knees for you not to carry out the threat.”
The judge said he did bear in mind that Mr Wilson had been Blackburn’s friend.
David Robson QC, defending, said the men had been “blood brothers” and that Blackburn will live with what he did for the rest of his life.
During the trial Jade Blackburn, 21, wept as she described to jurors how Mr Wilson, her boyfriend of three years, told her “I love you” and then kissed her just moments before he died from the wounds inflicted by her brother.
The court heard the attack happened in the living room at Blackburn’s girlfriend Kim McGuire’s house at Sledmere Close, Peterlee.
After a “pleasant evening” Blackburn and Miss McGuire went to her bedroom to watch a film, while a “silly argument” broke out between Miss Blackburn and Mr Wilson.
The court heard the couple had been asked to be quiet but the noise, and their argument, continued.
Blackburn, of Walker, denied murder throughout the trial.