Researching the ancestry of Indigenous families in historical Jalisco, Zacatecas, and Aguascalientes presents unique challenges. During the 17th and 18th centuries, it was common for many Indigenous People not to have consistent surnames. This inconsistency could be attributed to various factors, including changes in employment or land ownership. Unlike the Spanish who typically maintained a strong attachment to their surnames, Indigenous People often adapted or altered their surnames, sometimes opting not to use one at all. This fluid approach to naming makes tracing lineage a complex but fascinating endeavor.

Established in 1548, the Spanish province of Nueva Galicia embraced 180,000 kilometers and included most of present-day Jalisco, Nayarit, Aguascalientes and Zacatecas. Across this broad range of territory a wide array of indigenous groups lived during the Sixteenth Century. The old Aztec empire had been replaced with Nueva España.

If your ancestors are from Zacatecas, Guanajuato, Aguascalientes, Jalisco or San Luis Potosí, it is likely that you are descended from the indigenous peoples who inhabited these areas before the Spaniards arrived from the south. The historian Eric Van Young of the University of California at San Diego has called this area, the “the Center-West Region” of Mexico. This cultural region, according to Dr. Van Young, amounts to about one-tenth of Mexico’s present-day national territory.

Mexico’s Northern Mountainous Regions

The Sierra Madre Occidental Mountains run from Chihuahua into Durango, Zacatecas, Jalisco and farther south. The Sierra Madre Oriental Mountains run parallel to the Sierra Madre Occidental range on the eastern side of the country.

The Cristero Rebellion affected the lives of many Mexicans. Many Mexican-American families still talk of it today. This work discusses the ideologies of the two combatants: The Mexican Government and the Catholic Church. The battles are not discussed here, but the beginning and end of the conflict are discussed as viewed by the American press.

The following presentation offers suggestions for tracing your Mexican ancestors back to Spain or Portugal. Although we offer research suggestions and show the reader resources to locate ancestors from the Iberian Peninsula, it is important to state the following:

Nueva Galicia’s Indigenous People: Established in 1548, the Spanish province of Nueva Galicia embraced 180,000 kilometers and included most of present-day Jalisco, Nayarit, Aguascalientes and Zacatecas.

As the eighth largest state of Mexico, Zacatecas has a square area of 75,284 square kilometers (29,067 square miles), equal to 3.84% of the national territory. The State of Zacatecas is divided into fifty-eight municipios, with the City of Zacatecas as its capital.

Throughout human history, many groups of people have witnessed the arrival of aliens from far away countries in their traditional homeland territories. Responses to such intrusions have varied from century to century, continent to continent and from one people to another. In most cases, the invader intruded upon the economy, the resources and the political administration of the indigenous peoples. And all too often, the invader dominates and enslaves the people. Other occupations are less dramatic.

The state of Zacatecas, located in the north-central portion of the Mexican Republic, is a land rich in cultural, religious, and historical significance. With a total of 75,539 square kilometers, Zacatecas is Mexico’s eighth largest state and occupies 3.9% of the total surface of the country. Politically, the state is divided into fifty-eight municipios and has a total of 5,064 localities, 86% of which correspond to the old haciendas.

The present state of Zacatecas is located at the geographical center of Mexico. Its shares borders with eight states: Coahuila de Zaragoza (on the north), Durango (on the west), Nayarit (on the southwest, Jalisco and Aguascalientes (on the south), Guanajuato (on the southeast), San Luis Potosí (on the west) and Nuevo León (on the northwest). As the eighth largest state of Mexico, Zacatecas has a square area of 75,284 square kilometers, equal to 3.84% of the national territory. The State of Zacatecas is divided into fifty-eight municipios, with the City of Zacatecas as its capital. Its territory lies wholly within the central plateau and is traversed by Sierra Madre Occidental mountain ranges.