Quetzalcoatl (Feathered Serpent) is considered one of the most important deities of the pre-Hispanic era. Known as the creator of humanity and the god of wind, he appears as early as the Teotihuacán civilization as an earth and water deity, often associated with the rain god, Tlaloc. After Nahua-speaking tribes migrated from the north he became the God of the Morning and the Evening Star, seen as a symbol of death and resurrection. For the Aztecs, he was the patron of priests and the inventor of the calendar.