I'm half Irish. When I was twelve, my family traveled to Europe, and our first stop was in Ireland, where we rented a car and drove around. I don't remember seeing many sites, except the Waterford factory, and a convent, I think. We first stayed in Adare, in a hotel where Teddy Kennedy had stayed, and where I was bitten by a dog. Two small dogs were let out of a room, ran down the hall, and one immediately bit me in the ankle! I had to see a doctor. The owner of the dogs was a senile "Sir Timothy", and couldn't remember if they had had their rabies shots. Luckily, I survived! Then we spent a couple of days at the Great Western Hotel in Killarney, and after that, drove around the Ring of Kerry and stayed there for a night (I think Teddy had stayed there, too).
I don't think I have any Irish mysteries, but I do have a number of books of Irish fairy tales and legends, and ghosts.