Georgius Tzul

Georgius Tzul (also Georgios; Greek: Γεώργιος Τζούλης) was a Khazar warlord against whom the Byzantine Empire and Mstislav of Tmutarakan launched a joint expedition in 1016.

He appears only in the account of the Byzantine court historians Kedrenos[1] and John Skylitzes,[2] who place him at Kerch and calls him "khagan" (the title of the Khazar emperors).

Kedrenos states that he was captured by the expeditionary force but does not relate his ultimate fate.

Even though earlier writers maintained that the Khazar khagan was required to adhere to Judaism, Georgius is a Christian name.

Whether Georgius Tzul was himself a Christian, a Jew or Shamanist with an unusual Greek name, or whether the name is merely a Byzantine attempt to transliterate a Turkic or Hebrew name, is unknown.