Belinda Contague ran the Aertael thieve's guild for several years, probably longer than anyone really knew, as apparently her predecessor (and father) Chodo Contague had actually gone senile and she had taken over, running the guild in his name.
Belinda was a vicious, cruel, and unpredictable psychopath, prone to killing for no reason at all, but also prone to rewarding those around her all out of reason for loyalty, good work, or just because she felt like it.
In late 1167, she was captured by the Wizard's council, tried and imprisoned.