DNF @ 34% 
 I wanted to keep going but life's too short to plod on with books you're really not enjoying. 
 It had potential, but there was far too much back story and Celtic history. Only a small percentage of it was interesting. While the book teased at plot at the beginning, any semblance kind of faded away. The jumping around in time with multiple POVs didnt do the story any favours either. 
 If you're looking for a historical mid-range fantasy with lots of history & a little bit of lore then this could be one for you. Me, I need more in the way of story & character design.