The Crow of Connemara by Stephen Leigh is released this week in the US and UK. See The Crow of Connemara (UK Link). This is billed as drawing from mythology and folktales, but nothing specific, but that's enough to warrant a mention here.
The Crow of Connemara is a contemporary Celtic fantasy set primarily in Ireland. Picking up threads from ancient Irish mythology and folktales, this story is fantasy, drama, and tragic romance all at once, a tale caught in the dark places where the world of ancient myth intersects our own, where old ways and old beliefs struggle not to be overwhelmed by the modern world.
Colin Doyle is young Irish-American musician from Chicago, whose interest is traditional Irish music. Maeve Gallagher is an Oileánach, an "Islander" from Ireland's west coast. Islanders are outcasts treated with suspicion by the locals, who think them responsible for wild and strange happenings in the area. Colin soon discovers that he's connected to Maeve in ways he never could have imagined.