Melusina Whymark Gospatrick
Melusina was born in Bombay, India, as the daughter of a career Colonial Service officer. She attended Schola in Bear House, and after she left school, apprenticed in Protective magic, specifically warding. Since then, she's taken up a variety of short-term consulting positions around the Empire, shoring up protections, coming up with unique designs to solve problems, and generally being more stylish, skilled, and just plain right than anyone else in the room.
(Click on the title above to learn more about Melusina's role in that book.)