Other notable bards include Kaztugan Žyrau, Žiembet Žyrau, Axtamberdy Žyrau, and Buxar Žyrau Kalkamanuly, who was an advisor to Ablai Khan, and whose works have been preserved by Mäšhür Žüsip Köpeev. ''Er Targhın'' and ''Alpamıs'' are two of the most famous examples of Kazakh literature to be recorded in the 19th century. The ''Book of Dede Korkut'' and Oguz Name (a story of ancient Turkic king Oghuz Khan) are the most well-known Turkic heroic legends. Initially created around 9th century CE, they were passed on through generations in oral form. The legendary tales were recorded by Turkish authors in 14–16th centuries C.E.