Source: Isles of the Shackles, pg(s). 4
The settlement was founded in 4674 AR by the notorious pirate captain Colvaas. Colvaas himself came to a bad end, and his remains still hang from a gibbet situated in the town's harbour, which is where Colvaas Gibbet gets its name.
Colvaas Gibbet is not actually on the coast. It is situated a short distance up a wide river. Its inhabitants tend to be taciturn and do not ask questions. As a result, the town is sometimes popular with those who want to keep a low profile for a while.