Born and raised in Mexico City, David is an Ethnohistorian graduated from the National School of Anthropology and History. His field of expertise is folk and popular religion, an area of study that explores the syncretism that appeared in Mexico with the arrival of the Spanish Conquistadors and gave rise to new traditions born of a fusion between Catholicism and Mesoamerican beliefs. He has also worked in the Historical Archive of the National Astronomical Observatory and the Digital University Collections Center, both at the National Autonomous University of Mexico, UNAM.