Demetrios Palaiologos
Despot of Morea · Lived 1407 to 1470 · aged 63
Demetrios Palaiologos or Demetrius Palaeologus was Despot of the Morea together with his brother Thomas from 1449 until the fall of the despotate in 1460. Demetrios and Thomas were sons of Byzantine Emperor Manuel II Palaiologos, and brothers of the final two emperors John VIII and Constantine XI.
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A typical day, 30 days to 18 August 2026
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Miniature from an early 15th-century manuscript depicting Demetrios's father Emperor Manuel II Palaiologos, his mother Helena Dragaš and his three oldest brothers John (later Emperor John VIII), Theodore and Andronikos
Ruins of fortifications in Mesembria, where Demetrios ruled as despot until his attempt to usurp the throne in 1442
The Despotate of the Morea c. 1450, showing the areas under the control of Demetrios and his brother Thomas
The Despot's Palace in Mystras, from which Demetrios ruled as Despot of the Morea
Portrait of Mehmed the ConquerorAbout this person
Demetrios had a complicated relationship with his brothers, whom he frequently quarrelled with, usually over the matter of Demetrios's wish to establish himself as the most senior of them and claim the imperial throne for himself.