Yauhtloc (once called Autloc) was an Tlamacazqui.
When he was High Priest of Knowledge, he met the Doctor, Susan, Ian, and Barbara, whom he believed was the reincarnated priestess Yetaxa. Upon her condemnation of what he viewed as fundamental tenets of Aztec society, like human sacrifice, he exiled himself. (TV: The Aztecs)
Twenty years later, his successor Tlohtoxcatl said, concerning the exile: "A man who is unable to tell the difference between a foreigner ... and a visitation of the sacred can have no claim to wisdom of any form... Simply because we have not found the answer to a puzzle, it does not mean that no such answer exists." (PROSE: Against Nature)