Island Magic, by Elizabeth Goudge

The Channel Islands were divided in allegiance between France and England. Of French blood, and yet subjects of Queen Victoria, the islanders were curious hybrid creatures. But now, in 1888, England is slowly stretching out her arms to them. Colin du Frocq is eight years old, and his dreams are of the sea that surrounds his home. By day he steals away and takes to the sea in any boat that is sailing. At night he lies in bed listening to the waves beating against the shore. Then one night, in a wild storm, a ship drives onto the nearby cliffs and a strange man enters Colin's life, changing Colin's course forever. "A glowing book...beloved scenes transplanted into the gardens of the Channel Islands." (The New York Times)