Gresselda Vym
Gresselda Vym was a Witchseeker Pursuivant of the Silent Sisterhood during the Horus Heresy. She commanded the Black Ship Somnus and the Brazen Sabre Cadre on a mission to Drusilla to capture the Rogue Psyker Xalmagundi. Her landing craft was shot down by the Alpha Legion.[1]