 He also appears as the protagonist in the trilogy "The Last Viking" (1980) by Poul Anderson, and in "Byzantium" (1989) by Michael Ennis, which chronicles Harald's career in the Byzantine Empire.The alternative history book "Crusader Gold" (2007) by marine archeologist David Gibbins features Harald as a key figure, as it follows him in acquiring the lost Menorah among his treasures during his service in the Byzantine Varangian Guard.Harald also makes an appearance in "Meadowland" (2005) by Tom Holt.