List of rulers of Volga Bulgaria

The Volga Bulgarians were for much of their early history, until the tenth century, under the suzerainty of the Khazar Khaganate.

[1] No medieval records from Volga Bulgaria itself have survived; its history is instead a reconstruction largely based on information drawn from contemporary Russian, Arabic and Persian sources.

[1] According to later legend, the founder of Volga Bulgaria was the 7th-century ruler Kotrag, a son of Kubrat,[2] though modern historians consider his historicity doubtful.

[2][5][6] The former territories of Volga Bulgaria were integrated into the Mongol Empire in 1236 and later became part of the lands of the Golden Horde.

After Kazan was conquered by Russia in 1552, Russian rulers sometimes adopted the title "Prince of Bulgharia", in reference to Volga Bulgaria.