John II Doukas, also Angelos Doukas ( Latinized as Angelus Ducas) (), was ruler of Great Vlachia (

Thessaly Thessaly ( ; ; ancient Aeolic Greek#Thessalian, Thessalian: , ) is a traditional geographic regions of Greece, geographic and modern administrative regions of Greece, administrative region of Greece, comprising most of the ancient Thessaly, a ...

) from 1303 to his death in 1318. John II Angelos Doukas was the son of Constantine Doukas of Thessaly by his wife Anna Euagionissa. He succeeded to his father's lands as a child in 1303. The Thessalian magnates chose his father's cousin Duke Guy II de la Roche of

Athens Athens ( ) is the Capital city, capital and List of cities and towns in Greece, largest city of Greece. A significant coastal urban area in the Mediterranean, Athens is also the capital of the Attica (region), Attica region and is the southe ...

as regent, and the duke promptly established his protectorate over Thessaly, with Anthony le Flamenc as his deputy ('' bailli''). Guy was the son of Duke William I de la Roche by Helena Komnene, the daughter of John I Doukas of Thessaly. The selection of the duke of Athens as regent proved both timely and fortuitous. Anna Palaiologina Kantakouzene, the regent of

Epirus Epirus () is a Region#Geographical regions, geographical and historical region, historical region in southeastern Europe, now shared between Greece and Albania. It lies between the Pindus Mountains and the Ionian Sea, stretching from the Bay ...

had invaded Thessaly, but was now forced to retreat by Guy's forces. Guy proved less successful, however, in restraining the Catalan Company, which burst into Thessaly in 1306 and proceeded to ravage the region for some three years. By the time Guy died in 1308 John had just come of age and resented the attempt of the new duke of Athens, Walter of Brienne, to maintain Athenian protectorate over Thessaly. To overcome John's resistance, Walter hired the Catalan Company himself, and charged it with asserting his authority over Thessaly. The Catalans conquered many fortresses, but insisted on garrisoning them by themselves. Frightened by their disobedience, Walter now turned against them, but the Catalans invaded his duchy in 1310. When the two forces clashed, Walter was defeated and killed in the

Battle of Halmyros The Battle of Halmyros, known by earlier scholars as the Battle of the Cephissus or Battle of Orchomenos, was fought on 15 March 1311, between the forces of the Frankish Greece, Frankish Duchy of Athens and its vassals under Walter V of Brienn ...

or Kephissos in 1311. With the Catalans moving into

Boeotia Boeotia ( ), sometimes Latinisation of names, Latinized as Boiotia or Beotia (; modern Greek, modern: ; ancient Greek, ancient: ), is one of the regional units of Greece. It is part of the modern regions of Greece, region of Central Greece (adm ...

Attica Attica (, ''Attikḗ'' (Ancient Greek) or , or ), or the Attic Peninsula, is a historical region that encompasses the entire Athens metropolitan area, which consists of the city of Athens, the capital city, capital of Greece and the core cit ...

, and the

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coast, John II was able to exert more control over Thessaly. Here he encountered the opposition of the local magnates, who had probably become accustomed to central authority that had been even more ineffectual than usually. John attempted to strengthen his position by drawing closer to the

Byzantine Empire The Byzantine Empire, also known as the Eastern Roman Empire, was the continuation of the Roman Empire centred on Constantinople during late antiquity and the Middle Ages. Having survived History of the Roman Empire, the events that caused the ...

and marrying Irene Palaiologina, the illegitimate daughter of Emperor

Andronikos II Palaiologos Andronikos II Palaiologos (; 25 March 1259 – 13 February 1332), Latinization of names, Latinized as Andronicus II Palaeologus, reigned as Byzantine emperor from 1282 to 1328. His reign marked the beginning of the recently restored em ...

in 1315. Perhaps at this time John was conferred the title of '' sebastokratōr''. He was already relying on some Byzantine assistance against the Catalans within his domains, but died in 1318 without heirs. On John II's death in 1318 much of northwestern Thessaly came under the control of the powerful magnate Stephen Gabrielopoulos, but the southernmost areas around Neopatras were seized by the Catalans, who set up their own principality there (the Duchy of Neopatras).

References

* * * {{DEFAULTSORT:John 02 Doukas 1318 deaths Komnenodoukas dynasty People from Thessaly Monarchs of Thessaly 14th-century Byzantine people Year of birth unknown Sebastokrators 14th-century monarchs in Europe Ypati