Cornwell, Admiral Katrina
(Portrayed by Jayne Brook).
Starfleet admiral who directed the U.S.S. Discovery to defend the Corvan II's inhabitants and mines during a Klingon attack in the mid-23rd century. She is a medical officer specializing in psychology.
Cornwell was captured by Klingons during a diplomatic mission to Cancri IV but later rescued from the Ship of the Dead by Michael Burnham.