 The saga focused on the Danish dynasty of Scylding (Old Norse "Skjöldung", plural "Skjöldungar"), the same semi-legendary dynasty featured in the Old English poem "Beowulf".The fragmentary Icelandic text known as "Sögubrot af nokkrum fornkonungum" is believed to be based on the "Skjöldunga saga", perhaps deriving from a late version of that work.Arngrímur Jónsson paraphrased parts of it into Latin, and parts of it are thought to be preserved in other sagas, including "Óláfs saga Tryggvasonar en mesta" and "Ragnarssona þáttr".