The heir to the throne is on a two-day trip to the country, where yesterday he became the first British royal to meet Gerry Adams, the veteran leader of Sinn Fein, the political arm of the now defunct Irish Republican Army.
Charles and his wife Camilla are currently in the western county of Sligo, where they will later pay what is expected to be an emotional visit to the village of Mullaghmore where Lord Mountbatten was murdered.
Two relatives, one of them Charles' teenage godson, and a 15-year-old local boy also died in the attack.
"At the time I could not imagine how we would come to terms with the anguish of such a deep loss," Charles told an audience in Sligo ahead of the Mullaghmore visit.
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"Through this dreadful experience I now understand in a profound way the agonies borne by others on these islands of whatever faith or political persuasion."
An estimated 3,500 people died during the sectarian unrest, which lasted three decades.