When was the sister of Theodora Porphyrogenita died who was reigned as Byzantine Empress alongside her sister?
Zoë Porphyrogenita Zoë ( "life" ] ; 978 – June 1050) reigned as Byzantine Empress alongside her sister Theodora from April 19 to June 11, 1042. She was also enthroned as the Empress Consort to a series of co-rulers beginning with Romanos III in 1028 until her death in 1050 while married to Constantine IX.
Theophilos Palaiologos Theophilos Palaiologos (Greek: Θεόφιλος Παλαιολόγος ; died 1453) was the cousin of emperor Constantine XI Palaiologos and a commander during the Fall of Constantinople. Known as a grammarist, humanist, and mathematician, he died in the final battle alongside the emperor.