It Has Been Commonly stated for almost two centuries now that the reason why the celebrated Mexican Jesuit, Francisco Javier Clavigero, was unable to publish the Spanish original of his Storia antica del Messico (Ancient History of Mexico) in Madrid stemmed from the savage attack made on the Italian edition by a highly nationalistic Spanish Jesuit, Ramón Diosdado Caballero, who considered it highly insulting and injurious to Spain and who urged the Spanish Government not to allow its publication until the author publicly retracted his damaging statements. That his bitter criticism prevented immediate publication there is no doubt, but on the basis of newly gathered evidence in Spanish and Roman archives, it is by no means clear that it was the ultimate cause for its not appearing.