Kayı (tribe)

The Kayı or Kayi tribe (Karakhanid: قَيِغْ qayïγ or qayig; Kayı boyu, Gaýy taýpasy) were an Oghuz Turkic people and a sub-branch of the Bozok tribal federation. In his Dīwān Lughāt al-Turk, the 11th century Kara-Khanid scholar Mahmud al-Kashgari cited Kayı as of one of 22 Oghuz tribes, saying that Oghuz were also called Turkomans. The name Kayı means "the one who has might and power by relationship" and the Turkmen proverb says that "people shall be led by Kayi and Bayat tribes" (Il başy - gaýy-baýat). In his history work Shajara-i Tarākima, the Khan of Khiva and historian, Abu al-Ghazi Bahadur, mentions Kayı among the 24 ancient Turkmen (Oghuz Turkic) tribes, direct descendants of Oghuz Khagan. Oghuz Khagan is a semi-legendary figure thought to be the ancient progenitor of Oghuz Turks. Kayı translates as "strong". In his extensive history work “Jami' al-tawarikh” (Collection of Chronicles), the statesman and historian of the Ilkhanate Rashid-al-Din Hamadani also says that the Kayı tribe comes from the oldest of Oghuz Khan's 24 grandchildren who were the patriarchs of the ancient Oghuz tribes, and the name Kayı means "powerful". Soviet Sinologist and Turkologist Yury Zuev based on the analysis of tribal names and tamgas from Tang Huiyao, identifies a number of ancient Central Asian Turkic tribes as Oghuz-Turkmen tribes, one of them is the Kay tribe, whom Chinese knew as Xí 奚 (< MC *γiei). After examining Chinese sources & consulting the works of other scholars (Pelliot, Minorsky), Zuev proposes that the Kay had belonged to the proto-Mongolic Xianbei tribal union Yuwen Xiongnu and that Kay had been ethnic and linguistic relatives of the Mongolic-speaking Khitans, prior to being known as an Oghuz-Turkmen tribe by the 9th century. Likewise, Hungarian scholar Gyula Németh (1969) links Kayı(ğ) to the (para-)Mongolic Qay/Xí, whom Tibetans knew as Dad-pyi and Göktürks knew as Tatabï; however, Németh's thesis is rejected by Mehmet Fuat Köprülü among others. Later on, Németh (1991) proposes that Mg. Qay is derived from Tk.