THE distraught family of 'Good Samaritan' Warren O'Connor said her son did not deserve to be stabbed to death as he had only ever helped people.
His mother, Tina, revealed the 24-year-old former soldier from Ferrycarrig Green in Coolock, Dublin, had just been accepted into the fire service.
She described him as the "rock of the family" who would do anything to help friends and relations.
His family urged anyone with any information on the incident in Donaghmede over the weekend to contact gardai.
"Put an end to the whole thing. He didn't deserve to die, he really didn't deserve to die like that, all he had ever done was help people," the mother-of-three said, battling back tears.
"How can they go home at night and sleep to be able to come out and do that to somebody?" his younger sister Carla asked
The former soldier and talented footballer was left with a long-bladed bread knife embedded in his chest after he went to t he aid of a friend who had been threatened by noisy partygoers.
His death was linked to a row among neighbours in The Beech apartment building at the Grattan Wood complex in Donaghmede.
"When he was at the (50th) party he got a phone call that one of his friends was in trouble," Tina explained, adding that he had helped get his friend's pregnant girlfriend and child into a car.
"They were driving off and they came after them, they bumped against the bumper of the car and Warren jumped out he said: 'Will you be careful, there is a child in that car.'
"The scuffle started then. They stabbed Warren here (pointing to upper chest), just right here in the chest, the blade broke in his chest," she told RTE' News.
His mother said the Army had offered a guard of honour for his funeral.
Gardai have carried out forensic checks on the knife and the cars used by the two groups involved, and are hoping these may yield some clues.
They believe they have traced all of the people who attended the party. Up to 60 gardai are on the case and officers have appealed to anybody with information about the incident on the Hole in the Wall Road to contact them at Coolock station.