Betty Guy tried to fight off her grandson as he smothered her with a pillow, a jury heard this morning.

Barry Rogers stopped for a while to drink a glass of whiskey but returned and again placed the pillow over her face.

This time "she passed away," said Sandra Adams, a former partner of Rogers.

Rogers, aged 33, of High Street, Fishguard, and his mother, Penelope John, 50, of Union Terrace, St Dogmaels, are on trial at Swansea crown court accused of murdering 84 year old Mrs Guy at her home in Hillcroft, Johnston, in the early hours of November 7, 2011.

The prosecution claim they had decided "it was time for her to go."

John is accused of feeding her tablets and whiskey and Rogers of "finishing her off" with the pillow.

They have pleaded not guilty to the charge.

Miss Adams today told the jury about what Rogers had told her of Mrs Guy's death.

She said she had attended Barn Street junior school along with Rogers but lost touch after they were to different secondary schools.

In late 2014 he suddenly "poked" her on Facebook and they began to exchange messages.

They met in person on January 3, 2015, and about three weeks later became boyfriend and girlfriend.

Miss Adams said they wanted a relationship based on "no secrets, no lies" and confided in each other.

Rogers, she said, told her he had killed someone but she was not shocked at first because she knew he had been in the Army.

But he told her it had been his grandmother.

Miss Adams said Rogers told her that late on November 6 John had telephoned him and and told him "it was time and he had to say his goodbyes."

"He said he drove to Johnston. They gave her her medication and waited for it to kick in. Then he placed a pillow over her face and smothered her.

"The grandmother was fighting back and he stopped. He had a glass of whiskey and went back to her a second time and placed the pillow over her face.

"She passed away then.

"There was just himself and Penny in the room.

"After she had passed he had another glass of whiskey and one of them called for the police or an ambulance."

Miss Adams said Rogers told her that a police officer noticed bruising around Mrs Guy's mouth but that a doctor had said the marks were consistent with the illness that she had.

Miss Adams said Rogers repeated the story several times over the following months.

She said Rogers had told her the funeral had been "rushed."

Rogers and John had wanted her body cremated but other siblings wanted her to be buried next to her husband.

A postmortem was not carried out and Mrs Guy's body was cremated at Narberth only four days after her death.

Miss Adams triggered the murder investigation when she went to police in Novemberber, 2015, and told officers what Rogers had said to her.

Cross examined by Rogers' barrister, Christopher Henley, Miss Adams agreed she had told police she considered Rogers to be a compulsive liar and an attention seeker.

The trial continues.