The westerlands is a region in the west of the continent of Westeros. Before Aegon's Conquest, it was known as the Kingdom of the Rock. People from the westerlands are known as westermen. The customary surname of bastards of noble origin born in the westerlands is Hill.
The westerlands is ruled from Casterly Rock by House Lannister. Notable bannermen include Banefort, Brax, Crakehall, Farman, Lefford, Lydden, Marbrand, Serrett, Swyft, and Westerling.