Wikipedia
In Norse mythology, Völsung was the son of Rerir and the eponymous ancestor of the ill-fortuned Völsung clan , which includes the well known Norse hero Sigurð. He was murdered by the Geatish king Siggeir and later avenged by one of his sons, Sigmund, and his daughter Signy, who was married to Siggeir.
Völsung's story is recorded in the Völsung Cycle, a series of legends about the clan. The earliest extant versions of the cycle were recorded in medieval Iceland; the tales of the cycle were expanded with local Scandinavian folklore, including that of Helgi Hundingsbane (which appears to originally have been part of the separate tradition of the Ylfings), and form the material of the epic poems in the Elder Edda and of , which preserves material from lost poems. Völsung is also the subject matter of the Middle High German epic poem and is mentioned as in the Old English epic Beowulf.