"Theodora of Khazaria (Greek: Θεοδώρα των Χαζάρων) was Byzantine empress as the second wife of Justinian II. She was a sister of Busir, khagan of the Khazars, but their relation to other Khazar rulers such as Bihar, father of the future Empress Tzitzak, is unknown." - (Wikipedia (en) 18.10.2020)
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