Cē Ācatl Topiltzin

Cē Ācatl Topiltzin Quetzalcōātl [seː ˈaːkat͡ɬ toˈpilt͡sin ket͡salˈkoːʷaːt͡ɬ] (Our Prince One-Reed Precious Serpent) (c. 895–947) is a mythologised figure appearing in 16th-century accounts of Nahua historical traditions, where he is identified as a ruler in the 10th century of the Toltecs— by Aztec tradition their predecessors who had political control of the Valley of Mexico and surrounding region several centuries before the Aztecs themselves settled there.

In later generations, he was a culture hero and figure of legend often confused or conflated with the important Mesoamerican deity Quetzalcoatl. According to legend in El Salvador, the city of Cuzcatlán (the capital city of the Pipil/Cuzcatlecs) was founded by the exiled Toltec Ce Acatl Topiltzin.