The inhabitants are called Jogur, the Jugur or Uigur of other authors.
"A General History and Collection of Voyages and Travels, Vol. I" by Robert Kerr
About 843 this Uigur Kingdom was destroyed by the Kirghiz.
"Hinduism and Buddhism, An Historical Sketch, Vol. 3 (of 3)" by Charles Eliot
These are henceforth known in history simply as Uigurs, the On branch having, as stated, long disappeared in the West.
"Man, Past and Present" by Agustus Henry Keane