 In HPL Lovecraft's novella "The Call of Cthulhu", one key character "lay in the Old Town of King Harold Haardrada, which kept alive the name of Oslo during all the centuries that the greater city masqueraded as “Christiana”".Justin Hill's "Viking Fire" is the second in his "Conquest Trilogy", and tells the life of Harald in his own voice.He serves as the protagonist in two children's books by Henry Treece, "The Last of the Vikings"/"The Last Viking" (1964) and "Swords from the North"/"The Northern Brothers" (1967).