Demetrios I Kantakouzenos was transitional governor of the Morea in 1383. Demetrios was the son of Matthew Kantakouzenos

Matthew Kantakouzenos

Matthew Kantakouzenos or Cantacuzenus was Byzantine Emperor from 1353 to 1357.-Life:...

, governor of the Morea, and Irene Palaiologina

Irene Palaiologina

Irene Palaiologina was the Empress consort of Matthew Kantakouzenos.-Family:Irene was a daughter of despotēs Demetrios Palaiologos and his wife Theodora. Her paternal grandparents were Andronikos II Palaiologos and his second wife Irene of Montferrat....

.

Byzantine emperor John V Palaiologos

John V Palaiologos

John V Palaiologos was a Byzantine emperor, who succeeded his father in 1341, at age nine.-Biography:...

 decided in 1381 to replace Matthew with his son Theodore I Palaiologos. Using all possible diplomatic tricks Matthew Kantakouzenos

Matthew Kantakouzenos

Matthew Kantakouzenos or Cantacuzenus was Byzantine Emperor from 1353 to 1357.-Life:...

 tried to block that decision but without success. During his last few months, Matthew resigned his power to Demetrios and gave him the task of making a smooth and peaceful transition of power from the Kantakouzenos family to the Palaiologos family. Demetrios' grandson, Manuel

Manuel Kantakouzenos, usurper of Morea

Manuel Kantakouzenos was a rebel leader who started a revolt against the Palaiologos family in the Byzantine Despotate of the Morea.He was the grandson of Demetrios I Kantakouzenos, the last Kantakouzenos governor of the Morea...

, in 1453, a short time after the fall of Constantinople

Fall of Constantinople

The Fall of Constantinople was the capture of the capital of the Byzantine Empire, which occurred after a siege by the Ottoman Empire, under the command of Ottoman Sultan Mehmed II, against the defending army commanded by Byzantine Emperor Constantine XI...

, tried to take power in Morea.

Children

His exact number of children or further descendants is unknown. The list of possible children or grandchildren includes:

• Georgios Palaiologos Kantakouzenos, "Sachatai" (d. circa 1456-59), scholar and military commander, defended Smederevo
  Smederevo
  Smederevo is a city and municipality in Serbia, on the right bank of the Danube, about 40 km downstream of the capital Belgrade. According to official results of the 2011 census, the city has a population of 107,528...
  
   during a Hungarian
  Kingdom of Hungary
  The Kingdom of Hungary comprised present-day Hungary, Slovakia and Croatia , Transylvania , Carpatho Ruthenia , Vojvodina , Burgenland , and other smaller territories surrounding present-day Hungary's borders...
  
   attack in 1456
  • Andronikos Palaiologos Kantakouzenos (d. June 3/4, 1453, executed), the last Grand Domestic of the Byzantine Empire
    Byzantine Empire
    The Byzantine Empire was the Eastern Roman Empire during the periods of Late Antiquity and the Middle Ages, centred on the capital of Constantinople. Known simply as the Roman Empire or Romania to its inhabitants and neighbours, the Empire was the direct continuation of the Ancient Roman State...
    
    
  • Thomas Kantakouzenos (d. July 25, 1463 in Adrianople), diplomat
    Diplomat
    A diplomat is a person appointed by a state to conduct diplomacy with another state or international organization. The main functions of diplomats revolve around the representation and protection of the interests and nationals of the sending state, as well as the promotion of information and...
    
     for Đurađ Branković, Despot
    Despotes
    Despot , was a senior Byzantine court title that was bestowed on the sons or sons-in-law of reigning emperors, and initially denoted the heir-apparent...
    
     of Serbia
    Serbia
    Serbia , officially the Republic of Serbia , is a landlocked country located at the crossroads of Central and Southeast Europe, covering the southern part of the Carpathian basin and the central part of the Balkans...
    
    
  • Helena Kantakouzene
    Helena Kantakouzene, Empress of Trebizond
    -Family:The primary source about her is the account "On the Origin of the Ottoman Emperors" by Theodore Spandounes. Theodore was related to the Kantakouzenoi. He was a son of Matthew Spandounes and Eudokia Kantakouzene. His father was a soldied of the Republic of Venice...
    
     (d. circa November 1, 1463 in Adrianople), Empress of Trebizond
    Empire of Trebizond
    The Empire of Trebizond, founded in April 1204, was one of three Byzantine successor states of the Byzantine Empire. However, the creation of the Empire of Trebizond was not directly related to the capture of Constantinople by the Fourth Crusade, rather it had broken away from the Byzantine Empire...
    
    , wife of David Komnenos
    David of Trebizond
    David Megas Komnenos was the last Emperor of Trebizond from 1459 to 1461. He was the third son of Emperor Alexios IV of Trebizond and Theodora Kantakouzene....
    
    , Emperor of Trebizond
• N. Kantakouzene