Ata Malek Juwayni, Persian governor and historian from Juwayn in Neishabour – Iran (1226 – 1283). He visited Mongolia, accompanied the Mongol Il-Khan Hulegu on his campaigns against the Ismailis of Alamut and the Baghdad Caliphate, and saved the famous library of Alamut from destruction. He wrote a history of the Mongols and of the dynasty of the Khwrazmshahs (ancient title of the rulers of Khwarazm, used regularly in the early Islamic period until the Mongol invasion, and sporadically thereafter), which has considerably influenced historical tradition in the East and is a historical authority of the first rank.