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Ezrolith Churn was the Archchancellor during the events of Eric. He achieved his great age not through survival, but by not being any trouble to anybody. He had intended to spend his twilight years working on his seven-volume treatise Some Little-Known Aspects of Kuian Rain-Making Rituals. This plan clearly did not last long, as Mustrum Ridcully was Archchancellor by the next book in the Wizards Series. It is unknown whether he met his end at the hand of an ambitious wizard trying to climb the ranks: although given that his successor was Ridcully (absent from university for ages and never expected the job, who was actually selected in the absence of any other credible or even ambitious candidate), it is likely that Churn died of old age leaving no clear claimant to the top job at all.