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.
John VII Palaiologos John VII Palaiologos or Palaeologus (Greek: , "Iōannēs Z' Palaiologos"; 1370 – 22 September 1408) was Byzantine Emperor for five months in 1390. While he was Emperor, there is evidence showing he used the name Andronikos, after his father, although when he was regent during his brother's absence in the West, he governed in his birth name.