Saga of the Light Isles Series by Juliet Marillier

"Eyvind can think of no more glorious future than becoming a Wolfskin, a warrior devoted to the service of the mighty war god Thor. His closest friend, Somerled, a strange and lonely boy, has his own very different ambitions - yet a childhood oath, sworn in blood, binds these two in lifelong loyalty... more"Eyvind can think of no more glorious future than becoming a Wolfskin, a warrior devoted to the service of the mighty war god Thor. His closest friend, Somerled, a strange and lonely boy, has his own very different ambitions - yet a childhood oath, sworn in blood, binds these two in lifelong loyalty. Meanwhile, far away across the water, on the Light Isles, the king's niece Nessa is beginning to learn the ways of the mysteries - though neither the young priestess nor her people can realize what lies ahead for them." "Eyvind and Somerled seem set to follow very different paths: one becoming a fearless servant of the Warfather, the other a scholarly courtier. Then a voyage of discovery, led by Somerled's brother Ulf, brings the two friends together again in accompanying a group of settlers to some beautiful islands rumoured to lie across the western sea. However, their good spirits are dampened by a tragedy on board, which Eyvind begins to suspect may not have been an accident." Ulf's new settlement begins in harmony with the native islanders, led by King Engus. But one day, on a trip to a holy place of the Folk, a brutal murder occurs and that peace is shattered. It is now that Eyvind begins to feel the restraining ties of his boyhood oath...and to realize what sort of future Somerled had in mind for himself all those years ago. less

The Norseman Eyvind, a fierce and loyal Wolfskin, came to a new land on top of the world to find his destiny. With his priestess bride Nessa he saved the land and weathered the treachery that was caused by Eyvind's blood-sworn friend Somerled. After much pain and sorrow the two lovers have managed to create a society where the Norse warriors and the gentle folks of the Orkney Isles live and thrive in contentment at last... moreThe Norseman Eyvind, a fierce and loyal Wolfskin, came to a new land on top of the world to find his destiny. With his priestess bride Nessa he saved the land and weathered the treachery that was caused by Eyvind's blood-sworn friend Somerled. After much pain and sorrow the two lovers have managed to create a society where the Norse warriors and the gentle folks of the Orkney Isles live and thrive in contentment at last. A decade and more has passed since the devastating events of the creation of the settlement and Eyvind and Nessa have watched their children grow and thrive in peace.But not all on the islands are content or at peace. Thorvald, the young son of Margaret, widow of the slain king and Eyvind's war leader, has always felt apart and at odds with all he knows. He learns upon his coming to manhood that he is not his father's son but that of the love that Margaret bore for the hated Somerled and that Somerled was not killed for his treachery but sent on a boat, adrift with little more than a knife and skein of water, doomed to the god's will. Thorvald is determined to find a boat and cast off to the West in a desperate bid to find a father he never knew...and to find out if he is made of the same stuff as the henious traitor. The tragedy of this scheme would be horrific enough...if it were not for the fact that Creidhe, the winsome daughter of Eyvind and Nessa has loved Thorvald since birth and unbeknownst to him conspires to go along on this most perilous of quests.What happens to them on their journey of discovery will ultimately change the lives of all they know and love...and will doom (or redeem) an entire people. less