Tonantzin

Mexico City's 17th-century Basilica of Guadalupe—built in honor of the Blessed Virgin and perhaps Mexico's most important religious building—was constructed at the base of the hill of Tepeyac, believed to be a site used for pre-Columbian worship of Tonantzin. It has been asserted that the word Guadalupe in this appellation may derive from Coatlaxopeuh, meaning “the one who crushes the serpent”,[citation needed] and perhaps referring to Quetzalcoatl.

- Wikipedia