King in the North

The King in the North, formerly known as the King of Winter, was the ruler of the North prior to Aegon's Conquest and the advent of the Seven Kingdoms. The position was later replaced by the title of Warden of the North. Regardless, both positions were typically held by the leaders of House Stark.

History
Sometime after the Long Night, a King of Winter made an unlikely alliance with a King-beyond-the-Wall and the Night's Watch to take back the Nightfort from one Brandon Stark, driving him and his armies back beyond the Wall.