Rerir, in Norse mythology, king of the Huns, son of Sigi, and grandson of the principal god, Odin. For a long time Rerir and his wife were childless. They prayed to Odin to give them a son. Rerir's wife ate an apple that Odin had sent her, and she was then able to give birth. Their son was Volsung, who became a valiant warrior and the founder of the Volsungs, a heroic lineage. Rerir was the grandfather of the hero Sigmund and great-grandfather of Sigurd (Sigurth), whose adventures are recounted in the Scandinavian epic 'Volsunga Saga' and the Icelandic 'Poetic (or Elder) Edda' and 'Prose (or Younger) Edda'.