咄陆
The Dulo clan was a ruling dynasty of the Bulgars. The origins of the Bulgars and Dulo clan are not known precisely, and there are many theories about their origin. It is generally considered that they – or at least the elite caste – were intimately related to the origin and activity of the Huns and Western Turkic Khaganate. Particularly, it is said that the Dulo descended from the rulers of Great Bulgaria, which was founded by Khan Asparukh's (679–701) father on the steppes of Ukraine. This state was a centralized monarchy from its inception, unlike previous Hunno-Turkic political entities, which were tribal confederations.