Jewels of the Sun by Nora Roberts

Determined to re-evaluate her life, Jude Murray flees America to take refuge in Faerie Hill Cottage, where she immerses herself in the study of Irish Folklore, and discovers hope for the future in the magic of the past.
Finally back home in Ireland after years of traveling, Aidan Gallagher possesses an uncommon understanding of his countrys haunting myths. Although hes devoted to managing the family pub, a hint of wildness still glints in his stormy eyes. In Jude, he sees a woman who can both soothe his heart and stir his blood. And he begins to share the legends of the land with her, while they create a passionate history of their own.