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wikipediaTheodora Porphyrogenita (Greek: Θεοδώρα, Theodōra; AD 980 – 31 August 1056), sometimes numbered Theodora III[1][n 1], was Byzantine Empress from 19 April 1042 to her death on 31 August 1056. She was sole empress regnant from 11 January 1055. She was born into the Macedonian dynasty that ruled the Byzantine Empire for almost two hundred years.
Theodora became involved in political matters only late into her life. Her father Constantine VIII was co-ruler of the Byzantine Empire for 63 years then sole emperor from 1025 to 1028. After he died his older daughter, Zoë, co-ruled with her husbands then her adopted son, Michael V, keeping Theodora closely watched. After two foiled plots, the princess was exiled to an island monastery in the Sea of Marmara in 1031. A decade later, the people of Constantinople rose against Michael V and insisted that she return to rule alongside her sister.
After 65 days Zoë married again to Constantine IX, who assumed the imperial responsibilities. Theodora seemingly retired to a convent after the death of Zoë in 1050. When Constantine died, the seventy-four-year-old Theodora returned to the throne despite fierce opposition from court officials and military claimants. For sixteen months she was a strong empress before being struck down by a sudden illness and dying aged seventy-six. She was the last ruler of the Macedonian line.