Fair Isle

Fair Isle is an island of the Sunset Sea, located near the coast of the Westerlands. The island is the site of Faircastle. During the Greyjoy Rebellion, Stannis Baratheon destroyed the Iron Fleet in a battle off the coast of Fair Isle.

In the books
In the A Song of Ice and Fire novels, Fair Isle is controlled by House Farman, vassals of House Lannister.