Man goes on trial charged with murdering his partner in Airdrie
Colin Kennedy, 63, is accused of killing Catherine Stewart at her home in Airdrie on July 4, 2021
A man allegedly murdered his partner having earlier accused her of having an affair with one of his sons.
Colin Kennedy, 63, is charged with killing Catherine Stewart at their home in Airdrie, Lanarkshire on July 4 2021.
Prosecutors claim Kennedy repeatedly struck the 54 year-old on the head and body with a knife.
He went on trial at the High Court in Glasgow today, where he denies the murder charge.
Jurors were told how Kennedy - nicknamed Coddy - had a total of seven children including two daughters and a son with Catherine.
One of those - Natalie Kennedy - gave evidence today.
She described growing up in a "happy family" with no violence.
'I did not believe it'
The 32 year-old was asked by prosecutor John McElroy KC how her parents relationship was in the run up to the alleged murder.
She did not live with them, but was in regular contact.
Natalie stated they had had a "fall out", had not been speaking and went to separate rooms in their home away from each other.
The witness said she went on to have concerns about Kennedy's mental health.
This included a claim that Catherine was having an affair with one of his sons - her step-son - who stayed in Liverpool.
Mr McElroy asked her: "What did you think?"
She replied: "I did not believe it."
Screaming and shouting
Natalie went on to be asked about the morning of the alleged killing.
She had been at home getting ready for work, had opened the back door to let her dog out when she heard "screaming and shouting".
It was a girl she knew who she described as being "hysterical" shouting her name.
Natalie went on to learn her mother had been "stabbed".
She lived nearby and went to her parents home, but police had arrived by that time, so could not get access.
'I thought there was something mentally wrong'
Kennedy's lawyer later questioned Natalie regarding the concerns about Kennedy's mental health and his claims about Catherine's alleged infidelity.
John Scullion KC stated: "Your father was telling people that he thought she was having an affair with your half-brother. Her step-son.
"When your father told you his thoughts - to put it bluntly - you believed it was ludicrous?"
Natalie: "Yes."
Mr Scullion: "You are aware it was not just you who was telling him it was ridiculous. Other people were.
"His view was completely fixed and unshakeable."
The witness replied: "It was as if what was in his mind was real."
The KC: "You thought he was deluded?"
Natalie: "I thought there was something mentally wrong."
The trial, before judge Lord Arthurson, continues.