Сокровенное сказание монголов
The oldest surviving literary work in the Mongolian language is "The Secret History of the Mongols", which was written for the royal family some time after Genghis Khan's death in 1227. It is the most significant native account of Genghis's life and genealogy, covering his origins and childhood through to the establishment of the Mongol Empire and the reign of his son, Ögedei.