Dede Korkut is a heroic dastan (legend), also known as Oghuz-nameh among the Oghuz Turk people, which starts out in Central Asia, continues in Anatolia and Iran, and centers most of its action in the Azerbaijani Caucasus. According to Barthold, "it is not possible to surmise that this dastan could have been written anywhere but in the Caucasus".

For the Turkic peoples, especially people who self-identify as Oghuz, it is the principal repository of ethnic identity, history, customs and the value systems of the Turkic peoples throughout history. It commemorates struggles for freedom at a time when the Oghuz Turks were a herding people, although "it is clear that the stories were put into their present form at a time when the Turks of Oghuz descent no longer thought of themselves as Oghuz.

http://en.wikipedia.org/wiki/Book_of_Dede_Korkut

OĞUZ TÃœRKLERİ (the Oghuz Turk people) and HUNLAR (Hyung-nular, Hiung-nular, Hiung-noiler) are the ancestors of the TURKS.