Busir

In 704 Justinian II, who had been exiled at Chersonesos for nine years, arrived at Busir`s court. Busir, perhaps seeking to use him in his political maneuverings with the Byzantine Empire, welcomed Justinian and gave him his sister in marriage (the woman`s Khazar name is unknown, but she took the baptismal name of Theodora.) Busir provided the c.....
Found on http://en.wikipedia.org/wiki/Busir
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