Iron, Fire and Ice: The Real History that Inspired Game of Thrones

Have you read everything George R.R. Martin has every written? Do you know what in Game of Thrones is based in real history?

A young pretender raises an army to take the throne. Learning of his father's death, the adolescent, dashing and charismatic and descended from the old kings of the North, vows to avenge him. He is supported in this war by his mother, who has spirited away her two younger sons to safety. Against them is the queen, passionate, proud, and strong-willed and with more of t...