"Theodora of Khazaria (Greek: Θεοδώρα των Χαζάρων) was the second Empress consort of Justinian II of the Eastern Roman Empire. She was a sister of Busir, Khagan of Khazars, but their relation to other Khazar rulers such as Bihar, father of future Empress Tzitzak, is unknown." - (Wikipedia (en) 22.02.2019)
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