Limerick businessman Steve Collins, whose son Roy was murdered by the notorious McCarthy-Dundon gang, was left sickened when he heard its name this week.
The gang has been linked to the killing of serial hitman Robbie Lawlor, and Mr Collins fears it may mark the mob's return to serious crime.
"It brings it all back when we hear that name mentioned. We thought the name Dundon had been buried for good and that they were gone," he told the Herald.
The re-emergence of the Dundons as part of the Drogheda feud could not have come at a worse time for the Collins family.
Today marks the 11th anniversary of Roy's murder in his amusement arcade in Limerick on Holy Thursday, April 9, 2009.
As the PSNI continues to investigate Lawlor's murder in Belfast, gardai believe the Dundons agreed to set him up for the Maguire-Price faction in Drogheda.
This group in turn wanted revenge on Lawlor for leaving one of the gang leaders paralysed after an assassination attempt and for the barbaric murder and dismemberment of 17-year-old Keane Mulready-Woods.
"When I read about the involvement of the Dundons in a high-profile murder, with Wayne openly celebrating in prison and some of his associates being arrested, and then gardai lifting the money they had supposedly been paid, I was sickened," he said.
"I was disappointed and shocked that the new generation seems to be on the way back and that they're trying to ingratiate themselves with other gangs.
"The State must make sure they're stopped in their tracks and are never again allowed to cause the chaos and misery they brought to Limerick.
"Wayne Dundon and his brothers are still organising murders from behind bars and then celebrating them, just like they did with our Roy, Shane Geoghegan and many others.
"They're obviously as treacherous now as they ever were. It reminds us of the pond life that they are."
Wayne Dundon (41) is serving a life sentence for the murder of innocent Roy.