Latin continued to maintain its prestige for centuries in the written tradition as the language of culture and its replacement is the result of a slow gestation and evolution of the vernacular. The vulgar emerges in medieval texts written in the form of errors and vulgarisms due to ignorance of the writer, reaching the official only ten centuries later. The medieval grammars, therefore, become an emblematic function in the history of language and culture, as milestones in the construction of the Italian cultural...