He was made governor by the khagan .
Kuber was the ruler of a mixed population in the former Roman province of Pannonia Secunda , including the descendants of the prisoners of war whom the Avars had captured in the Balkan Peninsula and settled around Sirmium .
Kuber was made governor by the khagan .
Kuber was the ruler of a mixed population in the former Roman province of Pannonia Secunda , including the descendants of the prisoners of war whom the Avars had captured in the Balkan Peninsula and settled around Sirmium .