In the Lay of the Volsungs is told the ancestry of the great hero Sigurd, the slayer of Fafnir - most celebrated of dragons, whose treasure he took for his own; of his awakening of the Valkyrie Brynhild who slept surrounded by a wall of fire, and of their betrothal; and of his coming to the court of the great princes who were named the Niflungs (or Nibelungs), with whom he entered into blood-brotherhood. In that court there sprang great love but also great hate, brought about by the power of the enchantress, mother of the Niflungs, skilled in the arts of magic, of shape-changing and potions of forgetfulness.