Who is Tiernan Darnton? Wiki, Biography, Age, Jailed For Life, Mary Gregory Murder

Tiernan Darnton

Tiernan Darnton Wiki – Tiernan Darnton Biography

Tiernan Darnton has been jailed for life for murdering his step-grandmother after admitting the killing during a game of ‘truth or dare.’

Darnton must serve a minimum of 15 years to kill Mary Gregory, 94, who died in a house fire in Heysham, Lancashire.


He is 21 years old.

Mary Gregory Murder

A coroner initially ruled Mrs. Gregory had died in an accidental fire after Lancashire Fire and Rescue Service concluded the most likely cause of the blaze was a carelessly discarded cigarette – and ruled out foul play.

But the case was reopened in May 2019 after police were tipped off how Darnton admitted killing his step-grandma in a counseling session.

Mrs. Gregory, his stepfather’s mother, screamed for help but was trapped after Darnton dismantled a fire alarm, blocked a set of doors, and cut the phone lines.

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The frail pensioner was found under a table in the conservatory of her home on May 28, 2018, but died in hospital four days later.


On Friday morning, Darnton was sentenced at Preston Crown Court after jurors unanimously convicted him of murder on Thursday.

On Friday, the court heard how ‘disturbing material’ – not presented to the jury during the trial – was also found in the defendant’s possession, including plans to stalk and attack women and a ‘kill list’ containing the names of multiple people.

Passing sentence, Mrs. Justice Yip said Darnton had subjected Mrs. Gregory to a ‘particularly cruel’ death.

‘Murder had been on your mind for some time,’ the judge told him.

‘On your evidence, you were fascinated by serial killers and their crimes. You had dark thoughts.

‘Internet searches which you made before and after you killed Mrs. Gregory paint a worrying picture.

‘Your opportunity to act on your dark thoughts came when your stepfather was away.

‘In the early hours of 28 May 2018, you went to Mrs. Gregory’s home and deliberately started a fire in one of the bedrooms.’

Jailed For Life

The 21-year-old has been sentenced three years after an inquest found his 94-year-old victim had died an accidental fire at her bungalow in Heysham, Lancashire.

The student has been jailed for life, with a minimum term of 15 years, over the murder of his step-grandmother after admitting to friends he had killed her during a game of “truth or dare.”


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