The death has taken place in Limerick of Carmel Collins, mother of Roy Collins, who was shot dead in a gangland attack in Limerick ten years ago.
Mrs Collins, who was in her 60s, had been ill for some time and died in Milford Hospice in Limerick earlier today.
Her son Roy was shot dead at their family business in Roxboro on 9 April 2009. He was 35 and was the father of two daughters.
Her family recently marked the tenth anniversary of his killing, and her husband Steve Colins spoke movingly to RTÉ News about the toll his death had taken on his family.
They had suffered threats and intimidation from members of the McCarthy/Dundon criminal gang for over ten years and had to live with garda protection.
They led marches in Limerick and lobbied for a change to Irish laws on gangland violence, which resulted in several new initiatives.
These included the introduction of non-jury courts for these crimes, the use of surveillance by gardaí, and making it a criminal offence to be a member of a criminal gang.
Eventually, the Collins family had to move away from Ireland for several years, but their plan was always to return to live and work in Limerick.
The family opened a new business in Limerick city centre, which is now managed by Steve Collins Jr, to enable the family to make a fresh start.
Three men, Wayne Dundon, Nathan Killeen, and James Dillon, are serving life sentences for the murder of Roy Collins.