Holy shit! I totally forgot about that. I wonder if this is the same person. Not sure if that tracks, because it says that he ruled after the Wall had been built, for the purpose of protecting against the Others. He may be the offspring of the original Night's King and White Queen. Which would obviously sink my "Sons of Craster" theory out of the water!Is 'this' Night's King not the same as the one of legends?
http://awoiaf.westeros.org/index.php/Night%27s_King

Good catch! Way too obscure a reference to now appear in a prominent adversarial role without there being some significance.
