Niobe Moira Atreides is the first and only child of Duke Mintor Atreides and lady Aleera; born in the twilight of her parents' lives, she is, for the time
being, the only Atreides heir, thus endangering the continuity of the lineage. Against her will, Niobe has received Bene Gesserit training for 13 years,
without ever becoming a fully-fledged Sister, at the request of her mother, a Bene Gesserit adept herself. Never knowing what part she was to play in the
Sisterhood's machinations, Niobe has proved to be a careful, dedicated pupil, gradually developing good political and diplomatic skills. For this reason,
only a few weeks prior to his death in 10 122, Duke Mintor proclaimed his only daughter the new Siridar Duchess of House Atreides, despite the protests of his
advisers.