https://www.radiotimes.com/tv/drama/pierce-brosnan-mobland-accent-criticism-newsupdate/

The Irish actor was asked about the backlash to his accent as mob boss Conrad Harrigan. ““My own accent is very soft. Conrad’s accent is a million miles away from me," he told Radio Times, adding that his performance was the result of a suggestion from his dialect coach. “I told him that I needed a Kerry accent,” he added. “So he gave me the name of a man, and I Googled the guy and that was it. It was a Kerry accent. And so, I just gave it full tilt.”