The list for the proposed August event was first spotted by a hacktivist who posted the information online. American platform Wired acquired documents belonging to Dialog last month, including a list of members.
Powerscourt Estate, which is a separate business from the Hotel and Spa said it was “relieved and pleased” that the Dialog event would not take place.
“Following a period of great concern for Powerscourt Estate and on foot of discussions with The Powerscourt Hotel, we are relieved and pleased to announce the Dialog event planned for August at the Powerscourt Hotel has been cancelled,” a spokesperson said.
It thanked its staff, neighbours, supporters and legal team for their backing “through this difficult and challenging time”.

An international invitation-only event linked to billionaire investor Peter Thiel which was booked to take place at the luxurious 5-star Powerscourt Hotel in Wicklow in August has been cancelled.
The venue has issued a statement saying that “a publicised event scheduled to take place in August will now not be taking place at the Hotel”.
“We have no further comment,” a spokesperson for the hotel said.
The conference, organised by networking group Dialog, has been held at luxury establishments around the world since 2006 and usually features organized discussions on global affairs, bringing together senior figures from technology, finance, defence and politics, in addition to prominent opinion writers.
Former attendees include Elon Musk and YouTube’s Neal Mohan. Talks at the event reportedly included ‘Money (Does?) Buy Happiness’ and ‘Bring Back Nuclear’ and ‘Navigating WWIII’.
Supporters of Dialog say the retreat allows for open, wide-ranging discussion, while critics have been sceptical of its aims given the secrecy that seems to surround the event.
Mr Thiel’s involvement with software company Palantir attracted controversy here because of the company’s involvement with providing services to the Israeli government