Batbayan Explained

Bat Bayan
Ruler of Bulgars
Reign:	667 to 690 CE
Predecessor:	Kubrat
Father:	Kubrat

Batbayan ruled the Khazarian Bulgars from 667 to 690 CE.^{[1] [2]} Theophanes and Nicephorus record his rule after the Khazars defeated the Bulgars and Old Great Bulgaria disintegrated in 668 CE.^[3]

There is a scholarly theory that he may have been the same person as Bezmer^[4] of the Nominalia of the Bulgarian khans who may have been also the first son of Kubrat.^[5] He was a member of the Dulo clan, who after Kubrat's death in the mid-7th century ruled Old Great Bulgaria, but his rule lasted only three years.^[6] Kevin Alan Brook calls him Bayan.^[7] Batbayan would subsequently have ruled the Bulgars as a subject of the Khazar Khagan.

Sources

1. Book: Dinkov . Stoyan . Radev . Radoslav . 2018 . Османо – Римска империя, българи и тюрки . bg . 2 . Sofia . Uncorp.org . 21 August 2023 . Каганите стават балтавари: Бат-Баян Дуло (667–690), Бу-Тимер (690–700), Сулоби (700–727), [...]..
2. Boris Zhivkov, Khazaria in the Ninth and Tenth Centuries, East Central and Eastern Europe in the Middle Ages, 450-1450, BRILL, 2015,, p. 138 & 228-229.
3. Carl Waldman, Catherine Mason, Encyclopedia of European Peoples, Facts on File library of world history, Infobase Publishing, 2006, . pp. 106-197.
4. Boris Zhivkov, Khazaria in the Ninth and Tenth Centuries, East Central and Eastern Europe in the Middle Ages, 450-1450, BRILL, 2015,, p. 228.
5. Florin Curta, Roman Kovalev as ed., "'The' Other Europe in the Middle Ages: Avars, Bulgars, Khazars and Cumans", Volume 2 of East Central and Eastern Europe in the Middle Ages, 450 - 1450, BRILL, 2008,, p. 152.
6. [Vasil Gyuzelev]
7. Kevin Alan Brook, The Jews of Khazaria, Edition 3, Rowman & Littlefield, 2018,, p. 15.