Co Tyrone man Daniel Cullen, 34, had recently moved to the capital to work in drama.
It is understood Daniel, who was from Dungannon’s Oak’s Road, drowned after falling into the water at Sir John Rogersons Quay, Dublin around 11.30pm on June 7.
His uncle Martin Cullen told Belfast Live that his death has devastated the family.
He added: “He was the nicest lad – just a really, really lovely lad. It has just devastated us.
“He was not only my nephew but one of my best friends.”
In a post on social media, he described Daniel as “one of the most intelligent and kindhearted men I have ever known”.
He also praised the PSNI and An Garda Siochana who he said “went beyond duty in helping us as a family”.
“Their kindness will never be forgotten,” he added.
A spokesperson for An Garda Síochána said: “The body of a man was recovered from the water during searches the following day. Gardaí are treating the matter as a tragic accident and foul play is not suspected. A file will be sent to the Coroner.”
Daniel’s remains have now been returned to the north and it is understood that he will be laid to rest later this week.
Friends and family have taken to social media to pay tribute.
White City Dungannon posted on Facebook: “So sad to announce the death of Daniel Cullen from Oaks Road. Daniel died in a tragic accident in Dublin, son of Donal and Mary Cullen and Brother of Ryan Cullen.”
His cousin Patrick Cullen also spoke of his devastation.
He said: “You won’t meet many more talented, clever and kind fellas than him. Ar dheis Dé go raibh a anam.”
“Daniel was a beautiful person. Deepest condolences to Mary and all the family,” said another tribute.
Someone else posted that he was “a handsome, kind young man taken to soon”.
The PSNI has been contacted for comment.