The Pipils or Cuzcatlecs are an indigenous people who live in western El Salvador, which they called Cuzcatlan. Their language is called Nahuat or Pipil, related to the Toltec people of the Nahuatl Nation. The Pipil language is a Uto-Toltec or Uto-Nicarao dialect of the Nahuan languages branch, it is a dialect chain that stretches from Utah in the United States down through El Salvador to Nicaragua in Central America. The name of the language family was created to show that it includes the greatest extent perimeter from the Ute language of Utah, to the former Toltec predecessor and the expanse margin Pipil-Nicarao successors. Evidence from archeology and ethnohistory also supports the southward diffusion thesis, especially that speakers of early Nahuatl languages migrated from northern Mexican deserts into central Mexico in several waves. However, in general, their mythology is more closely related to the mythology of the Maya peoples who are their near neighbors and by oral tradition said to have been adopted by Ch'orti' and Poqomam Mayan people during the Pipil in the 9th century CE, led by Topiltzin Quetzalcoatl.