Khan Kuber (or
Kouver) was a
Bulgar leader, brother of
Khan Asparukh and member of the
Dulo clan, who according to the
Miracles of St Demetrius, in the 670s was the leader of a mixed Christian population of
Bulgars, ‘
Romans’,
Slavs and
Germanic people. The
Miracles of St Demetrius states that, circa 680 AD, Kuber had a falling out with the Avar khagan, and after repelling an Avar attack, led his followers of around 70,000 people, from Srem and to Macedonia (modern
Republic of Macedonia). The Byzantines initially called his people
Sermisianoi (after their former settlement - Sirmium), and later the
Keramisians (after their new place: the Keramissian plain in Greater Macedonia).
In Macedonia, they had contacts and possibly mixed with the
Dragovites - a Slavic tribe in the region. Some of his people wanted to disperse to their respective various homelands. Since they were Christians, they were probably once imperial subjects that were captured by the
Avars. Kuber asked the Byzantine...
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