Bene Gesserit concubine to Duke Leto, mother of Paul and Alia.
Paul is the son of Lady Jessica, born from her defiance of the sisterhood's orders.
Jessica is Leto's concubine and trusted partner in governance.
Duncan and Jessica coordinate their defense efforts during the Harkonnen attack.
Piter's military campaign directly targets Jessica, driving her into the deep desert.
Alia is Jessica's daughter, whose birth completes the Bene Gesserit ritual.
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