A trust established by financier Dermot Desmond for the benefit of his children paid €14.25m to acquire Walford, the Irish Independent can reveal.
The price paid by Mr Desmond's Celtic Trustees represents an increase of just €250,000 on the €14m the Shrewsbury Road mansion's most-recent owners, Yesreb Holdings, had paid to secure its ownership in December 2013.
The €14.25m price tag also amounts to a fraction of the €58m developer Sean Dunne paid to acquire the property in trust for his wife, Gayle Killilea, in 2005, in a deal which saw Walford earn the title of "Ireland's most-expensive house".
While it is understood the Desmond family trust's purchase of Walford was completed in early December, the matter has since been complicated as a result of Mr Dunne's ongoing dispute with the official handling his bankruptcy.
As part of his investigation into Mr Dunne's financial affairs, the official assignee, Chris Lehane, has raised questions over the ownership of Walford's previous owners, the Cypriot-registered Yesreb Holdings.
Mr Lehane told the High Court it was necessary to establish who the current beneficial owner of Walford is, and on what basis the claim is being made".
Mr Dunne has strongly denied having any involvement in the house's ownership. In a replying affidavit to the High Court, he said: "I am not, or was not ever the legal beneficial owner of Walford."
Clearly determined that Mr Lehane's investigations into the developer's affairs will have no impact on their acquisition of Walford, Mr Desmond and his children Brett, Ross, Derry and Zoe and Celtic Trustees commenced High Court proceedings against the official assignee last Monday.