It's St. Patrick's Day, and so let's celebrate.... *Saoirse Ronan. Already an icon, by way of "Brooklyn," "Lady Bird," and "Little Women." *Novelist Colm Toibin. (see also: Saoirse Ronan.) *Novelist Sally Rooney. *Booker winner Anne Enright. *Memoir superstar and Pulitzer winner Frank McCourt. (People said the first book wasn't strictly true, but still, it made a splash.) There's also Stephen Rea, maybe the one and only Oscar-nominated actor who was once married to a terrorist. (That story can be found in "Say Nothing.") I hope one day to see this strange and troubled country. Happy St. P Day to you!