Tzompantzin

Tzompantzin was the last Otomi tlatoani (ruler) of Xaltocan, an island city-state in the lakes of the Valley of Mexico, reigning after Paintzin. Xaltocan had long warred with the Nahua city of Cuauhtitlan, until around 1395 its ruler Xaltemoctzin allied with Tezozomoc of Azcapotzalco and his Mexica subjects of Tenochtitlan, and the island was conquered.

Tzompantzin fled the ruined city with his people and took refuge at Metztitlan to the north, where he fortified himself and held out against the Tepanecs. The refugees made Metztitlan an independent señorío, the direct successor of the Xaltocan kingdom.