Yearwood

From the back cover:

Driven by a Dangerous Destiny

Finn, witchson, bastard, heir to kingdoms on land and undersea, must leave home to seek his true birthright. Through a perilous world of magic he roams... where crows speak riddles and beautiful witches flash into flame.

But Finn must face a danger far greater than all the forces of magic. For the truth of his own heritage is steeped in the ancient powers of murder and incest. And Finn's fall from innocence might be his only survival.