Yes, it's the same author. I picked this one up in large part because I did enjoy Bones of Faerie so much. (And I'm really looking forward to the sequel, Faerie Winter, although I don't think it's going to be out until next year. Sigh!)

I love Celtic mythology and I'm still getting a little bored of Celtoid fantasy. Part of that is because it's so often interpreted in the same way (the "not Disney fairies!" backlash has come full circle, to where many books about 'faerie' have become what I call "Gossip Girl with wings," which is just as two-dimensional as the Disney-esque fairies but in another direction), but part of it is... there's so much interesting to do with hidden-folk myths, so why limit the genre so much?

I do love the huldre/hildufolk, and would love to see more about them.

(And you are more than welcome to friend. :) )