Luis Laso de la Vega

Luis Laso de la Vega (or Luis Lasso de la Vega) was a 17th-century Mexican priest and lawyer. He is known chiefly as the author of the Huei tlamahuiçoltica ("The Great Happening"), an account published in 1649 and written in the Nahuatl language, which contains a narrative describing the reported apparition of the Virgin Mary before Saint Juan Diego in 1531, some 117 years earlier. The account describes the appearance of the apparition to Juan Diego (an indigenous convert to Roman Catholicism, whose original pre-conversion name is given as Cuauhtlatoatzin) at the hill of Tepeyac.

Little is known about Laso de la Vega's life. He was a criollo, i.e. a Mexican-born person of full Spanish ancestry. Historians have culled from church and academic records the information that he earned a Bachelor's degree, and registered for a course in canon law at the University of Mexico in 1623. He had the title of Licenciado (literally "Licensed"), generally meaning someone licensed to practice secular or Canon law.

He was appointed vicar of the sanctuary of Tepeyac (near Mexico City) in 1647, and rebuilt the first chapel there, which enclosed a freshwater spring. He was promoted to the cathedral chapter in 1657. His writings demonstrate a great zeal for the Catholic faith and expertise in the Nahuatl language.

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