- From Old Turkic (kaɣan) (compare Turkish hakan or kağan). (Wiktionary)
“He stayed there some tine and dealt with various matters; among other things, he gave audience and leave to depart to legates from Sigfred, king of the Danes, and to those sent to him, supposedly in the cause of peace, by the khagan and the jugur, princes of the Huns.”
“0626 - Avaren/Slaves under khagan Bajan begin siege of Constantinople”
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