Diario histórico de la rebelion y guerra de los pueblos Guaranis situados en la costa oriental del Rio Uruguay, del año de 1754

A Jesuit chronicler of the Guaraní missions, he is remembered for a vivid account of the mid-18th-century conflicts that followed the Spanish-Portuguese treaty over South American borderlands. His surviving work offers a close, contemporary view of colonial power, war, and Indigenous resistance.