Ioannes Doukas, ruler of Thessaly

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Ioannes Doukas (Uroš), ruler of Thessaly

Also Known As: "Jovan", "Monah Joasaf", "Jovan Uroš Nemanjić", "John Ouresis Doukas Palaiologos or Joasaph of Meteora"
Death: between 1422 and 1423 (71-74)
Immediate Family:

Son of Simeon Uroš Palaiologos, Despot Of Epirus And Thessaly and Tomaida Orsini, Komnene Angelina
Husband of ? Palaiologos
Father of Helena Ouresina Palaiologina
Brother of Maria Angelina Ducena Palaiologina and Stefan Duka
Half brother of Duka Simeonov

Occupation: Ruler of Thessaly, Ruler, monk
Title: Titular Emperor of the Serbs and Greeks
Managed by: Noah Tutak
Last Updated:

About Ioannes Doukas, ruler of Thessaly


Jovan Uroš Nemanjić (Serbian: Јован Урош Немањић / Jovan Uroš Nemanjić) or John Ouresis Doukas Palaiologos or Joasaph of Meteora (Greek: Ιωάννης Ούρεσης Δούκας Παλαιολόγος, Iōannēs Ouresēs Doúkas Palaiologos), was the ruler of Thessaly from c. 1370 to c. 1373, retiring as a monk for the next half century thereafter. He died in 1422.[1][2]


John Uroš was the son of Emperor Simeon Uroš Palaiologos by Thomais Orsini. He was born in 1350 and died in 1422.[3]His maternal grandparents were John II Orsini and Anna Palaiologina.

John Uroš married a daughter of Radoslav Hlapen, a Serbian lord in Macedonia. According to the manuscript Dell'Imperadori Constantinopolitani, preserved in the papers of Angelo Masarelli, the father of John's wife was "lord of Drima" ("l Signor Drimi").

John had five children:[4]

  1. Constantine (Konstantin)
  2. Michael (Mihajlo)
  3. Demetrios (Dimitrije)
  4. Helena (Jelena) Ouresina Palaiologina, who married Theodore Kantakouzenos, with whom she had Irene Kantakouzene
  5. Asanina


  • He married Irina (Irene), the widow of caesar Preljub. They had the following issue: ... Unnamed, married John Uroš[1]
  • 1. Evans, Charles F. H. (1989). Studies in Genealogy and Family History in Tribute to Charles Evans on the Occasion of His Eightieth Birthday. Association for the Promotion of Scholarship in Genealogy. GoogleBooks
  • 4. the Masarelli manuscript, 'Dell'Imperadori Constantinopolitani', from papers of 'Massarellus', Angelo Massarelli (1510-1566), held now in the Vatican Library, reports: "Cesare Urione de Phersali hebbe dui figlioli, Demetrio et Giovani, il quale prese per moglia da figlia del S'or Drimi, hebbe cinque figlioli, cioe Helena, Constantino, Michel, Asanina, Demetrio. Helena fu maritata in Theodoro Catacusino."
  • Theodore's wife was Helena Ouresina Doukaina, a daughter of John Uroš, ruler of Thessaly.[10]
  • 10. Williams, Kelsey Jackson (2006). "A Genealogy of the Grand Komnenoi of Trebizond" (PDF). Foundations. 2 (3): 171–89. Archived (PDF) from the original on 8 June 2019. PDF page 12:
    • 16. Nicol (1968, pp.176-192) published an accurate account of Theodoros’ children but mistakenly attributed them to the sebastokrator Demetrios Kantakouzenos (d.c.1384), an error which Hunger noted in his edition of Chortasmenos and which Nicol corrected in his addenda (1973, pp.312-313). Brook (1989, pp.6-8) establishes that Theodoros’ wife, and consequently Theodora’s mother, was Helena Uroš Doukaina, daughter of Ioannes Uroš Doukas, Emperor in Thessaly, c.1371-1372, and grandson of Stefan Uroš III Dečanski, King of Serbia.