Salvador "Sal" Sánchez Narváez was a Mexican professional boxer born in the town of Santiago Tianguistenco, Estado de México. Sanchez was the WBC and The Ring featherweight champion from 1980 to 1982. Many of his contemporaries as well as boxing writers believe that had it not been for his premature death, Sánchez could have gone on to become the greatest featherweight boxer of all time. Sánchez died on August 12, 1982, in a car accident while driving from Querétaro to San Luis Potosí. He is also the uncle of Salvador Sánchez II.

Santiago Tianguistenco, often simply called Santiago by locals, is a city located in Mexico State about thirty km south of the state capital of Toluca. It is the municipal seat for the municipality of Tianguistenco. It is located in the southwest part of the Valley of Toluca at the edge of the Ajusco mountain range that separates it from Mexico City. The name Tianguistenco (Tyanguistengko) is from Nahuatl and means “at the edge of the tianguis,” which is a traditional Aztec market. The section of the city where the industrial park is still bears this name. Historically, the area was known as having one of the richest and best-stocked markets in the Toluca Valley. Today, it is still home to a large permanent municipal market as well as a weekly tianguis that covers much of the historic center.