Author: Atarah al'Norahn
Nat Torfinn was an old man from the Two Rivers. He is likely dead, because Perrin's memories of him are from when he was a boy, and he thinks of him in the past tense.
He was blind, and had a wrinkled face and thin white hair.
He was able to dissemble any blacksmith's puzzle by touch. He always said that any puzzle could be solved, once you found out where to push and where to pull.
(Reference: Crossroads of Twilight, Chapter 8)