FRIENDS and neighbours of devout Catholic Tom O'Gorman expressed disbelief at news of his violent death.
The 39-year-old was described as the life and soul of the party and a true gentleman.
He worked part-time as a researcher with faith organisation the Iona Institute, where he was a friend and colleague of Irish Independent columnist David Quinn.
Michael Kelly, the editor of the 'Irish Catholic' newspaper, to which Tom was a contributor, said: "Tom was an absolute gentleman. He was one of those guys who was absolutely inoffensive. The idea that anybody could have a bad word to say about him is incredible.
"He was a man of deep faith. He was very involved in all kinds of faith causes. He was also passionate about Leinster and Irish rugby."
He was the "life and soul of the party", Mr Kelly said, adding: "He was a very good mimic; absolutely sociable; always the centre of everything."
Tom uploaded his last photo to Facebook on Saturday, only hours before his brutal death. His friends say it shows him lively and engaged.
He lived in a large detached house in upmarket Beechpark Avenue in Castleknock with a tenant. The property was his original family home, which he shared with his mother Ann until her death from cancer in October 2012.
His father, Thomas, a vet, had passed away a number of years previously. Tom is survived by his younger siblings Catherine, who lives in the UK, and Paul.
"It's awful to think that something like that could happen across the road from you and you hear nothing," said a Beechpark Avenue resident, who didn't wish to be identified.
Another neighbour, Ted Leddy, said he was "absolutely shocked" by the killing.
"It's just horrific to think that something like this could happen," he added.
A bouquet of flowers was left at the front door of Mr O'Gorman's home yesterday afternoon.