The Greeks were accompanied by the envoys of the great duke, or chagan, or czar, of the Russians.
"The History of The Decline and Fall of the Roman Empire Volume 5" by Edward Gibbon
The bishop of Singidunum presented the gospel, which the chagan received with devout reverence.
"The History of The Decline and Fall of the Roman Empire Volume 4" by Edward Gibbon
The friar said, "Serenity, this is John Chagan Noyon," indicating the older Tartar.
"The Saracen: Land of the Infidel" by Robert Shea
It is John Chagan who keeps her.
"The Saracen: The Holy War" by Robert Shea