All I've Ever Wanted Is A Story

On the hundredth day after the new year the heralds come to the doors of the city, announcing the arrival of the Golden Caravan at the farthest stop of its route ; like every year, citizens and travellers will surely gather at the western door to see it come to pass.

The Corpus of Electronic Texts, or CELT, a collection of Irish cultural materials. This includes English translations of Irish myths.

Mary Jones - similar to CELT, and a resource we used for translations in the Irish mythology class I took in undergrad.

An Encyclopedia of Fairies by Katherine Mary Briggs, a British folklorist.

The Folklore of Cornwall by Ronald M. James. Unfortunately this book is harder to access and is often only in university libraries, but if you're interested in piskies it's a potentially very helpful read.