Will saw them. If he says they are dead, that's proof enough for me.

I saw men freeze last winter, and the one before, when I was half a boy. Everyone talks about snow forty-foot-deep, and how the ice wind comes howling out of the north, but the real enemy is the cold. 

I've had the cold in me too, lordling. Two ears, three toes, and the little finger off my hand. I got off light. We found my brother frozen at his watch, with a smile on his face.