The Dresden Files: Portland
Baroness of Seattle
Isabella Alvarez saw the Aztec civilization with Cortez. She was turned with other members of the expedition during a ritual with the Red Court during that expedition. She has achieved much in the Court ever since. She has now been sent to Seattle to clean up the mess there left by the former Margrave since his demise. And what a mess. Once she puts his house in order, she will set her sights on avenging his death against the petty mortals that somehow brought it about.
UPDATE: Killed by Brianna Karkana in her limousine in Seattle.