Anna Ash

Anna Ash is the leader of Ordo Lebes. (Ch 5, White Night)

Biography
While Harry Dresden is trying to help Karrin Murphy solve a case of murdered magic practitioners, Mac slips Harry a note with Anna's name and the name of her group: Ordo Lebes, and what time they're meeting. (Ch 4, White Night)

Harry and Murphy go to talk to her and the Ordo. they learn tha tas many as twenty local practitioners have been killed or gone missing, some in Ordo Leves, some not. Some of the dead or missing women have been with a tall man in a Grey Cloak. While others have been seen with a beautiful dark-haired man with grey eyes and pale skin (this matches Thomas Raith's description, Harry's brother). (Ch. 6, White Night)