The Mexica Leave Their Legendary Homeland of Aztlan
A wandering clan sets out from a mythical island at the urging of a war god who has not yet earned his temple
Quick facts
- Legendary homeland
- Aztlan, location unknown
- Patron god
- Huitzilopochtli
- Key early stop
- Chicomoztoc, the Seven Caves
What happened
According to Aztec accounts recorded after the Spanish conquest, the Mexica people set out from Aztlan, a homeland whose location is unknown and may be entirely legendary, guided by their patron god Huitzilopochtli. The Yale-New Haven Teachers Institute's account of the migration traces the Mexica first to Chicomoztoc, the Place of Seven Caves, and describes a journey that took them through the Valley of Mexico by 1168 and lasted nearly a century before it ended. Along the way the Mexica were driven off repeatedly by established city-states that saw them as poor, unwelcome newcomers with no land of their own. Huitzilopochtli promised his followers an island in a lake marked by an eagle on a cactus, a sign they would carry as their founding myth for the rest of their history.
Why it matters
This migration story, not verified history but a myth the Mexica told about themselves, gave a landless people a divine claim to whatever territory they eventually took. Every later Aztec ruler traced his legitimacy back to this journey and the promise attached to it, which made the eventual founding of Tenochtitlan read as fulfillment rather than conquest.
How we know
The migration story survives only in post-conquest sources: Nahuatl-language chronicles, pictorial codices such as the Codex Boturini, and Spanish-recorded oral traditions. No contemporary 12th-century record exists, so scholars treat the specific dates and the location of Aztlan as legend rather than verified fact.
Sources
- Yale-New Haven Teachers Institute. 99.02.01: The Aztecs: A Pre-Columbian History · Reputable sourceteachersinstitute.yale.edu · The domain "teachersinstitute.yale.edu" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
- World History Encyclopedia. Aztec Civilization · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
See something wrong? . Corrections with a source get fixed fastest.
Part of a timelineThe Aztec Empire25 events · From a wandering clan on a swampy island to the dominant power of Mesoamerica, and its end in a 93-day siegeView all →