of the Guachichiles, Spaniards, Otomi, Tarascos, Mulattoes, Blacks and Tlaxcalans, thus creating a unique miscegenation in Mexico. Tribes and Territories The Guachichiles occupied the entire Potosino Altiplano, part of Guanajuato, Jalisco, Zacatecas and Tamaulipas. This area extended from the south, along the Lerma or Grande river, in Michoacán and Guanajuato, to the Comanja mountain ranges and, on the border with the Rioverde area, the boundary rose to the north. Gonzalo de las Casas observed: "They occupy a lot of land and that is how the most people of all the Chichimecas are and who have done the most damage. There are many partialities and not all are well known." The Guachichiles were not a solid kingdom or political state in the 16th century, but rather a set of tribes and chiefdoms, the Spaniards observed three groups: those of Mazapil (where the Mazapiles predominated) to the north, in the mountains that border the town from Parras, from Las Salinas, to the center of San Luis Potosí and finally from Tunal Grande (where the Xales predominated), where the largest food supply place for the Guachichiles was located; These three groups were not political or cultural units, they were the inhabitants of the three geographical areas where the Guachichiles were centralized. Regardless of the three groups of guachichiles, there were a large number of tribal groups, many of them only mentioned once by the Spaniards: Bózalos or negritos, Macolias, Samúes, Maticoyas, Alaquines, Capiojes, Machipaniquanes, Leemagues, Mascorros, Caisanes, Coyotes, Guanchenis, Uaxabanes, Guenacapiles, Alpañales, Pisones, Cauicuiles, Alacazauis, Guazancores and los Chanales. Language The Guachichil language is now extinct and very little is known about it. It may have been an Uto-Aztecan language closely related to the Huichol language. The Guachichil language is a poorly documented language known only for the structural and morphological information deducible from proper names and place names, this language was divided into 3 dialects or varieties, the Bozalo (or vocalo), the Negrito and another called simply Guachichil, and was closely related to the language of the erased tribes called Quinigua (Martínez, 2019), it has been classified without providing more details within the Uto-Aztec languages, others are inclined to relate it to the hypothetical Coahuiltecan family, which would include Guachichil, the quinigua, maratino, naolan, karankawa and coahuilteco, having an even more distant relationship with comecrudo and cotoname, based on the structure of proper names. Examples of Guachichile proper names are: Aiguaname, Analale,