This article by Robert Loerzel originally appeared in Pioneer Press on December 3, 2008. When John Mahoney needed a refresher course on how to do a Dublin accent, he went straight to an expert — the acclaimed Irish actor Gabriel Byrne. Mahoney, the Oak Park actor best known for his role in the 1993-2004 sitcom “Frazier,”… Continue reading John Mahoney discusses ‘The Seafarer’