Curse of the Crimson Throne
Fort Korvosa was the name given to the Chelish defensive structure built on Endrin Isle which began construction in 4407, the original wooden palisade of the Fort would be destroyed in the Great Fire along with many of the original buildings. When the local Shoanti resistance crumbled and was defeated in 4488 during the Last Shoanti War, colonists began settling the mainland across the river. Having far expanded beyond its original wilderness outpost in 4504, the town decided to drop the Fort from its name.
Despite this Fort Korvosa still referred to inhabitants of Endrin Isle until the rest of the island was also inhabited far beyond the original reach of the walls. Now Fort Korvosa is a ward of the Old Korvosa district, its old high granite walls crumbling due to lack of maintenance.