Elaine O'Hara's brother has told the Central Criminal Court he believes his late sister used the profile name 'chained brunette' on a fetish web site.
John O'Hara was giving evidence in the trial of Graham Dwyer of Kerrymount Close, Foxrock who is accused of murdering the Dublin childcare worker on 22nd August 2012 for his own sexual gratification.
Elaine O'Hara's fiat punto car was found near Shanganagh cemetrary two days after she was allegedly murdered by Graham Dwyer up the Dublin mountains.
At this stage her family had reported her missing and a search of the area was carried out until the light faded
Back at her apartment in Stepaside that evening her younger brother John O'Hara found the name of a fetish web site written down in a notebook.
He logged in and found a profile 'chained brunette' he believed was a match for his sister.
Asked if he was shocked at his sister's interest in such things he replied that he was because Elaine treated him very much as a baby brother.
Earlier her sister Ann said Elaine was 'naive', 'very trusting of people' and 'acted quite young' because of her psychiatric difficulties.
Earlier, a jogger who is the last witness to have seen Dublin childcare worker Elaine O'Hara alive described her to gardaí as "distant and uninterested".
Conor Guilfoyle is giving evidence at the trial of Graham Dwyer of Kerrymount Close, Foxrock who denies murdering Ms OHara at Killakee, Rathfarnham, on August 22nd 2012.
Mr Guilfoyle was jogging at Shanganagh at around 5:30pm on the night of her disappearance.
He is the last witness to have seen her alive. He said he stopped to give her directions towards a footbridge by the railway line.
He said she was wearing a light blue raincoat and did not say thank you like she would rather not engage in conversation.
He could pinpoint where he met her because he was using an app that timed and tracked the route of his run.
He told the jury he saw her again minutes later on the footbridge walking towards the sea.
It is the prosecution's case that Ms O'Hara (36) was in a sadomasochistic relationship with Mr Dwyer - and that the architect murdered her in the Dublin mountains that evening for his own sexual gratification.