The trial is currently underway in England of John Brown, brother of Derry Eurovision star Dana, who has been accused of five counts of indecent assault.
Sixty year old John Brown, who now lives in Berkshire in England, denies five counts of indecent assault against two girls under the ages of 13 and 16 at various locations and times in the 1970s.
Eurovision Song Contest winner Dana has been accused of being aware of the abuse allegations while she ran for the Irish presidency.
A prosecution witness told day three of the trial at Harrow Crown Court that Dana had been aware of the allegations. However, the Eurovision star had denied any knowledge of the allegations at the time.
The court heard that, after family members became aware of the allegations, Mr Brown sought help from a priest,
The alleged victim claimed Mr Brown, who was part of Dana’s 2011 election campaign team, touched her inappropriately on four occasions - both in the UK and United States - in the 1970s and said she was angered that the allegations were being refuted by Dana.
Referring to a phone call she had with Dana about October 2011, she said: “I was angry because she had known all along.”
The court also heard evidence from the mother of the alleged victim who said she had confronted Mr Brown after being told about the abuse when her daughter was 10 or 11 years old during a visit by him to the United States.
The alleged victim’s mother spoke on the phone to Dana who said she would collect Mr Brown in the UK and organise some treatment for him, the court was told.
“She said when he got home she would meet him, talk with him and work with him from that side,” the witness said.
“She mentioned she knew someone who could talk to him - it was my understanding it was a priest.”
The alleged victim and her family said they had no contact with Mr. Brown for more than two years, but met him again after Dana claimed her brother had been “cured”.
The prosecution alleged Mr Brown went on to reoffend during a further visit to the family when the girl was aged 13 or 14.
It was put to the alleged victim by the defence that the case was a lie created to support her defamation proceedings against Dana over a television interview in which the singer claimed the allegations were “vile and malicious lies.”
The victim denied the suggestion and said: “No. It seems like an awful lot of planning for something that is so hurtful.”