Merlin arrives and explains that the damsel with the sword was actually a false traitor, who was angry with her own brother, a good knight who slew her lover. With the help of the lady Lily of Avalon, this damsel had sought revenge for her lover's death through that sword, whose holder is destined to slay his own brother. Although logic may suggest that Balin and this damsel might therefore share a brother, there is no indication from Malory that this is the case. Merlin explains this all to the court; he explains how the sword came to be where it was and its intended purpose. This explanation that Merlin gives may have evolved through re-tellings of the story and through inconsistencies in the legend, but it is clear from Merlin that this sword that Balin has taken from the damsel bears a curse of some kind. The sword seemed to have been based on Tyrfing of Norse mythology.