Robb Stark Crowned King in the North

After learning of his father's execution, Robb Stark is proclaimed King in the North by his bannermen, led by the Greatjon Umber. He continues his campaign against the Lannisters, winning a major victory at the Battle of the Whispering Wood, where he captures Jaime Lannister. This event establishes Robb as a major military leader and the figurehead of the Stark rebellion.