Known also as Nican mopohua (Here it is said), this document is the report in Nahuatl of the history of the apparitions of the Virgin of Guadalupe, on the hilltop of Tepeyac, to the humble Indian Juan Diego, between December 9 and 12, 1531. It is considered the central document of the cult of the Virgin of Guadalupe, which is part of the fundamental identity of Mexicans. Luis Lasso de la Vega, its author, was the vicar of the shrine to the Virgin. The report may be based upon a lost history of the apparitions, written in the middle of the 16th century by the learned Indian Antonio Valeriano, a member of the Colegio de Tlatelolco and a collaborator of Fray Bernadino de Sahagún. The Guadalupean cult has been documented in Mexico since 1555-56, but the first history of the apparitions, written in Spanish by the priest Miguel Sánchez, dates from 1648. The present document is the Nahuatl version of this history, written in a cultured Nahuatl with possible Jesuit influences. Called the “Patroness of the Americas,” the Virgin of Guadalupe, or Our Lady of Guadalupe, is considered an important cultural figure to all Mexicans and is a symbol of Mexican independence. The Basilica of Our Lady of Guadalupe in Mexico City is the second-most visited Catholic shrine in the world.