Constantine XI Dragases Palaiologos or Dragaš Palaeologus (Greek: Κωνσταντῖνος Δραγάσης Παλαιολόγος, Kōnstantînos Dragásēs Palaiológos; 8 February 1405 – 29 May 1453) was the last Roman emperor, reigning from 1449 until his death in battle at the Fall of Constantinople in 1453. Constantine's death marked the definitive end of the Eastern Roman Empire, which traced its origin to Constantine the Great's foundation of Constantinople as the Roman Empire's new capital in 330. Given that the Eastern Roman Empire was the Roman Empire's medieval continuation, with its citizens continuing to refer to themselves as Romans, Constantine XI's death and Constantinople's fall also marked the definitive end of the Roman Empire, founded by Augustus almost 1,500 years earlier.