Yngvi (called Ingialdr): The even earlier source Íslendingabók also cites the line of descent in Ynglingatal and it gives the same line of succession: xiiii Yngvi. xv Jörundr. xvi Aun inn gamli. The Skjöldunga saga and the Bjarkarímur tell that Jorund was defeated by the Danish king Fróði (corresponds to the Heaðobard Froda in Beowulf), who made him a tributary and took his daughter. The daughter gave birth to Halfdan, but another woman became Fróði's legitimate wife and gave him an heir named Ingjaldr (corresponds to the Heaðobard Ingeld in Beowulf). Together with one of his earls, Swerting, Jorund conspired against Fróði and killed him during the blót. Notes Primary sources Ynglingatal Ynglinga saga (part of the Heimskringla) Historia Norwegiae Skjöldunga saga Bjarkarímur Secondary sources Nerman, B. Det svenska rikets uppkomst. Stockholm, 1925. Mythological kings of Sweden