Khan Kubrat, having established a spacious state in the steppes of modern Ukraine, has ruled in peace with Constantinople, a result of his close friendship with the emperor and, conceivably, of his appreciation of the Empire’s culture.

According to legend the third, fourth, and fifth of the many sons of Kubrat with their hordes originally inhabited the Avar Khaganate.

The Pereshchepina hoard, discovered in 1912 by Ukrainian peasants in the vicinity of Poltava, yielded gold and silver objects of total weight of seventy-five kilograms, including a ring which eventually allowed identification of the grave as that belonging to Khan Kubrat.

The ring was inscribed in Greek "Chouvr(á)tou patr(i)k(íou)", indicating the dignity of patrikios that he had achieved in Constantinople.

His eldest son Batbayan succeeds Kubrat in Onoguria in 665.