In the Prelude to Dune series (1999–2001), Tessia is the Bene Gesserit wife of Prince Rhombur Vernius of Ix. Though she is sent to him by the Sisterhood, any possible agenda involving the Prince and House Vernius is never revealed; even Lady Jessica cannot determine if Tessia has any ulterior motives.
Read more about this topic: List Of Dune Bene Gesserit