Westeros fashion studies: Westerlands
"The westerlands or westlands, historically the Kingdom of the Rock, are a region in the west of the continent of Westeros. Before Aegon's Conquest, it was ruled by the Kings 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 are ruled from Casterly Rock by House Lannister. Notable bannermen have included Banefort, Brax, Broom, Clegane, Crakehall, Farman, Lefford, Lydden, Marbrand, Payne, Prester, Reyne, Serrett, Swyft, Tarbeck, and Westerling."