Wood Beyond the World

In a geographically vague medieval milieu, a wealthy merchant's son (who wants to escape from an unfaithful wife, and who is haunted by strange waking visions of a lady, her servant girl, and a dwarf) goes to sea on one of his father's ships. A storm drives the vessel off course, and he lands in an unknown country in which magic works, and where he will find both danger and romance.