Man jailed for murdering partner after affair claim

Kennedy later met their son – also Colin – and told him: “I am going to kill your mum.”

On the morning of the attack, the couple’s youngest daughter was upstairs when she heard Catherine shouting” Get off me”.

The daughter – aged 17 at the time – told police that she saw her mother lying in a pool of blood and tried to pull him away from Catherine.

Detectives praised her for her bravery in trying to prevent what happened.

Kennedy was soon arrested and confessed that he had stabbed Catherine, saying he “just kept hitting her”.

At the trial, he did not deny the killing, but had lodged a special defence of diminished responsibility.

In his closing speech, prosecutor John McElroy KC said Kennedy was guilty of a “pre-meditated” killing.

He told jurors: “The Crown position is that this was murder, plain and simple. It was driven by anger and rage. His life, as he knew it, was coming to an end.

“He was suffering from stress, his partner wanted him out. The relationship had effectively come to an end.

“He was a jealous, angry and unhappy man.”

First offender Kennedy was jailed for life and ordered to serve a minimum of 25 years behind bars.