According to ''
Hervarar saga'', 'Refil' was a son of the
Swedish king
Björn Ironside and the brother of its next king
Erik Björnsson. He appears in ''
Hervarar saga'' and in ''
Nafnaþulur''. According to these sources, Refil was a great warlord and a
sea-king who would have lived in the early
9th century.
It was Refil's son
Erik Refilsson who inherited the Swedish throne upon Erik Björnsson's death, which suggests that Refil may not have been alive at the time.
According to ''
Skáldskaparmál'', 'Refil' is also the name of the sword of
Regin, brother of
Fafnir.