Hálfdanar saga Brönufóstra to his father's kingdom and defeats and kills Soti and his Vikings. Although numerous sagas contain analogs to the iconic cave battle with Grendel and his mother in "Beowulf," none is closer to the Old English epic than is Hálfdan’s cave battle with Járnnefr and his wife. The saga is found in three, 15th-century vellum manuscripts, but its post-medieval popularity is evidenced by its preservation in over four dozen paper manuscripts. In the 18th century it served as the source for the first known saga forgery. "Hálfdanar saga Brönufóstra" has a sequel in "Sörla saga sterka", where it becomes clear
The dragon (Beowulf) Germanic literature and the literature of Christian hagiography featured dragons and dragon fights. Although the dragons of hagiography were less fierce than the dragon in "Beowulf", similarities exist in the stories such as presenting the journey to the dragon's lair, cowering spectators, and the sending of messages relaying the outcome of the fight. The dragon with his hoard is a common motif in early Germanic literature with the story existing to varying extents in the Norse sagas, but it is most notable in the "Völsunga saga" and in "Beowulf". "Beowulf" preserves existing medieval dragon-lore, most notably in the extended digression