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Thekla (820s or 830s – after 870) was a princess of the Amorian dynasty of the Byzantine Empire. The eldest of seven children of the emperor Theophilos and empress Theodora, she was proclaimed augusta (an imperial title) in the late 830s. After her father's death in 842, her mother became regent for her younger brother Michael III, and Thekla was associated with the regime as a co-empress alongside Theodora and Michael. Thekla was deposed by Michael, possibly alongside her mother, in 856 and consigned to a convent in Constantinople. In one narrative, accepted by some Byzantinists and rejected by others, she became the mistress of Michael's friend and co-emperor Basil I, but was neglected after Basil murdered Michael in 867 and took power as the sole emperor. In this narrative, she took another lover, was discovered, and fell out of favor, then was beaten and had her property confiscated. (Full article...)