Theodora of Khazaria
Theodora of Khazaria (Greek: Θεοδώρα τῶν Χαζάρων, romanized: Theodṓra thou Khazária) was Byzantine empress as the second wife of Justinian II. She was a sister of Busir, khagan of the Khazars. == Marriage == Justinian II had first succeeded to the throne in 685.