Jealous husband stabbed cancer-survivor wife to death over alleged affair

dailyrecord.co.uk:

A jealous killer murdered his partner after accusing her of having an affair with one of his sons.Colin Kennedy, 63, was guilty of the "malevolent butchery" of Catherine Stewart at their home in Airdrie, Lanarkshire on July 4 2021.One of their daughters came downstairs to find him carrying out the savage attack on the cancer survivor that Sunday morning.Kennedy had become convinced the 54-year-old had been cheating on him with Colin Llewellyn - a son from a previous relationship.He had earlier warned that he was going to "kill" his partner of 35 years before he struck.Kennedy, of Kirkliston, Edinburgh, had claimed he was mentally ill at the time.But, he was found guilty of a murder that prosecutors said was "driven by anger and rage".First offender, Kennedy was jailed for life at the High Court in Glasgow and ordered to serve a minimum of 25 years behind bars.Jurors heard how the couple's relationship had deteriorated in the run-up to the killing.Rows became common and they often sat in different rooms at their home.Kennedy - nicknamed Coddy - had a total of seven children including two daughters and a son with Catherine.He latterly had the "unshakeable" view his partner was seeing her step-son Colin Llewellyn, 45 - who stayed in Liverpool - behind his back.This included him making a "secret clandestine recording" of a phone call between the pair.This was played during the trial.

At one stage, Catherine stated: "He is accusing me of something I have not done."The grandmother instead claimed it was Kennedy who was previously guilty of infidelity.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 Nicole was upstairs when she