Paulus Diaconus 
Historia Langobardorum [EPUB ebook] 
History Of The Lombards

The Latin version of the history of the Lombards, to be translated is only the preface and the other parts in Italian
it is very short and if you have already done the history of the Lombards by Paolo Diacono you have already practically finished the job. From sales, they often go in pairs, those who buy the Latin version also take the other. Others take only the fully translated one.