In the great fantasy book "A Wizard of Earthsea" written by Ursula K. Le Guin, the main character defeats nameless shadow. For this young wizard find a true name of this shadow.
What was the name of this nameless shadow?
Sparrowhawk realizes that the shadow is really a part of himself, and so he calls it "Ged", and then the two battle it out with Sparrowhawk defeating the shadow (symbolism is in play here- this is where he truly overcomes what happened to the Archmage)