The Children of Urdis (Grimwold and Lethos Book 2)

After the War of the Trolls, Valahur is again at peace. But peace is a rare commodity in the northern realms. Ancient enemies are gathering just out of reach. They sail for Valahur, bringing deadly warriors and deadlier magic.
Lethos has a premonition of evil. At the shoreline his fears are confirmed. A ghostly ship, a white ark, glides across the horizon. Whatever crews the ship fills him with dread. The white ark sails to its destination with none to challenge it. In its wake, dark raiding ships follow. Lethos faces the raiders alone while Grimwold assembles his war band.
The battle seems won, then Grimwold is struck down. And he does not rise again.
The story of Lethos and Grimwold continues in this second book of the series. Their legend grows as they cross swords with sorcerous foes from the dawn of history.