The Dulo clan was a ruling dynasty of the Bulgars, who were of Turkic origin. It is generally considered that their elite was related to the Huns and the Western Turkic Khaganate. Particularly, it is said that the Dulo descended from the rulers of Old Great Bulgaria. This state was a centralized monarchy from its inception, unlike previous Hunno-Turkic political entities, which were tribal confederations.

The Bulgars were Turkic semi-nomadic warrior tribes that flourished in the Pontic–Caspian steppe and the Volga region during the 5th-7th century. They became known as nomadic equestrians in the Volga-Ural region, but some researchers believe that their ethnic roots can be traced to Central Asia.