The King of the Mountain and the Vale was the ruler of the sovereign Kingdom of the Mountain and the Vale from the Andal invasion of Westeros until the War of Conquest. The first King of the Mountain and the Vale was Ser Artys Arryn, who defeated the last Mountain King and founded House Arryn, a dynasty that ruled the kingdom until Aegon the Conqueror's invasion of Westeros. The boy-king Ronnel Arryn peacefully submitted his kingdom to Aegon in return for a ride on Visenya Targaryen's dragon Vhagar.
Known Kings of the Mountain and the Vale
- Artys Arryn, the first King of Mountain and Vale and founder of the Arryn dynasty.
- Ronnel Arryn, the last King of Mountain and Vale who surrendered in the War of Conquest and was made the first Lord Paramount of the Vale and Warden of the East.