Of the Karakhanid dynasty, he is known as the first Turkic ruler to convert to Islam; raised in Kashgar under his uncle Oghulchak, he met the scholar Abu Nasr ibn Mansur and converted around 920 CE, taking the name Abd al-Karim. His conversion triggered the mass Islamization of Turkic peoples; he seized Kashgar and waged campaigns as a ghazi. He died in 344 AH / 955 CE and was buried in Artush, where his son built a mausoleum (present building 1995); the conversion narrative rests on hagiographic sources (Tazkirah-i Bughra Khan). (Sources: TDV İslam Ansiklopedisi 'Satuk Buğra Han'; en.wikipedia.org 'Sultan Satuq Bughra Khan')