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Constantine XI Dragases Palaiologos or DragašPalaeologus (Greek: Κωνσταντῖνος Δραγάσης Παλαιολόγος, Kōnstantînos Dragásēs Palaiológos; 8 February 1405 – 29 May 1453) was the last Byzantine emperor, started in 1449 until he died in the Fall of Constantinople. His death marked the end of the Byzantine Empire (Eastern Roman Empire) and of the Roman Empire, founded by Augustus almost 1,500 years earlier.