The learned men of medieval Iceland took great pride in their pagan past and copied traditional poems on mythological and legendary themes. In due course some of these narrative poems served as the basis for sagas in prose. In his Edda (probably written c. 1225), Snorri Sturluson tells several memorable stories, based on ancient mythological poems, about the old gods of the North, including such masterpieces as the tragic death of Balder and the comic tale of Thor’s journey to giantland. Snorri’s book also contains a summary of the legendary Nibelungen cycle. (A much fuller treatment of the same theme is to be found in Vǫlsunga saga and Þiðriks saga, the latter composed in Norway and based on German sources.) Other Icelandic stories based on early poetic tradition include Heiðreks saga; Hrólfs saga kraka, which has a certain affinity with the Old English poem Beowulf; Hálfs saga og Hálfsrekka; Gautreks saga; and Ásmundar saga kappabana, which tells the same story as the Old High German Hildebrandslied, that of a duel of honour between a father and a son.
The term legendary sagas also covers a number of stories the antecedents and models of which are not exclusively native. These sagas are set in what might be called the legendary heroic age at one level and also vaguely in the more recent Viking age at the other, the action taking place in Scandinavia and other parts of the Viking world, from Russia to Ireland, but occasionally also in the world of myth and fantasy. It is mostly through valour and heroic exploits that the typical hero’s personality is realized. He is, however, often a composite character, for some of his features are borrowed from a later and more refined ethos than that of early Scandinavia. He is in fact the synthesis of Viking ideals on the one hand and of codes of courtly chivalry on the other. Of individual stories the following are notable: Egils saga einhenda ok Ásmundar berserkjabana, which skillfully employs the flashback device; Bósa saga ok Herrauðs, exceptional for its erotic elements; Friðþjófs saga ins frækna, a romantic love story; Hrólfs saga Gautrekssonar; Gǫngu-Hrólfs saga; and Hálfdanar saga Eysteinssonar. There are many more. The legendary sagas are essentially romantic literature, offering an idealized picture of the remote past, and many of them are strongly influenced by French romance literature. In these sagas the main emphasis is on a lively narrative, entertainment being their primary aim and function. Some of the themes in the legendary sagas are also treated in the Gesta Danorum of the 12th-century Danish historian Saxo Grammaticus, who states that some of his informants for the legendary history of Denmark were Icelanders.