Tepeyacac

Tepeyacac, later called Tepeaca, was a Nahua city-state in the highlands east of the Valley of Mexico. Three related rulers governed it, and its dynasty claimed Chichimec descent.

In the mid-fifteenth century Moctezuma I conquered the region, making Tepeyacac a tribute-collection centre. After its people attacked a Spanish party in 1520, Cortés marched against it with Castilians and Tlaxcalan allies. He stormed the town in August 1520 and founded Segura de la Frontera on the site.