Barbara Schinko 
Lock of Hair from the Queen-under-the-Hill [EPUB ebook] 

The dancer Siobhan loves Thomas the Rhymer, but his heart belongs to the Queen of Elfland. The self-proclaimed master thief Lucas, too, is forced to realize that the realm-under-the-hill lets no-one go who has stolen a kiss or a lock of hair from it. A vow at Midsummer leads to a fiery relationship, a druid wants revenge, three fishermen meet their fate, and Winter falls in love.Inspired by Scotland’s foggy forests and the green coasts of Ireland, Barbara Schinko tells fairy-like stories about mermaids, living fire, and a harper who has to make a decision between two women and two worlds.