Kül Bilge Qadır Khan (Karakhanid: کُلْ بِلْكا قَادِرْ خَانْ) or Bilge Kul Qara Khan was the first known Qara-Khagan (supreme ruler) of the Karakhanids.
Tribal affinity There are different theories on the tribal identity of Bilge Kul khagan. According to Western and Kazakh historiographies, he was a ruler of Isfijab, a descendant of the Karluk yabghu."Karluk Yabghu State (756–940)" Qazaqstan Tarihy. quote: "In 840, in the Central Asian steppes an important event occurred. The Yenisei Kyrgyz invasion destroyed the Uighur Khaganate, forcing the Uighurs to flee to Turfan oasis and to Gansu [original article mistakenly has Guangzhou]. The Karluk Djabgu and the ruler of Isfijab, Bilge Kul Qadeer-Khan, took advantage of the situation and proclaimed himself as a sovereign ruler and assumed a new title of Khagan." Alternatively, he was from the Edgish tribe, a part of the Chigils or a Yagma. According to Pritsak, he claimed the title "Khaqan" after the fall of Uyghur khaganate since he was from the Ashina dynasty.Kli︠a︡shtornyĭ, S. G. (2004). Gosudarstva i narody Evraziĭskikh stepeĭ : drevnostʹ i srednevekovʹe. Peterburgskoe Vostokovedenie. Sultanov, T. I. (Tursun Ikramovich) (2-e izd., isprav. i dop ed.). Sankt-Peterburg However, Wei Liangtao claims that he was, in fact, Pang Tegin, a ruler of remnants of the Uyghur ruling dynasty in Khotan. Qian Baiquan doubted that.
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