The Theme of Sebasteia ( el, θέμα Σεβαστείας) was a military-civilian province (''thema'' or
theme
Theme or themes may refer to:
* Theme (arts), the unifying subject or idea of the type of visual work
* Theme (Byzantine district), an administrative district in the Byzantine Empire governed by a Strategos
* Theme (computing), a custom graphical ...
) of the
Byzantine Empire
The Byzantine Empire, also referred to as the Eastern Roman Empire or Byzantium, was the continuation of the Roman Empire primarily in its eastern provinces during Late Antiquity and the Middle Ages, when its capital city was Constantin ...
located in northeastern
Cappadocia
Cappadocia or Capadocia (; tr, Kapadokya), is a historical region in Central Anatolia, Turkey. It largely is in the provinces Nevşehir, Kayseri, Aksaray, Kırşehir, Sivas and Niğde.
According to Herodotus, in the time of the Ionian Re ...
and
Armenia Minor
Lesser Armenia ( hy, Փոքր Հայք, ''Pokr Hayk''; la, Armenia Minor, Greek: Mikre Armenia, Μικρή Αρμενία), also known as Armenia Minor and Armenia Inferior, comprised the Armenian–populated regions primarily to the west and no ...
, in modern
Turkey
Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a list of transcontinental countries, transcontinental country located mainly on the Anatolia, Anatolian Peninsula in Western Asia, with ...
. It was established as a theme in 911 and endured until its fall to the
Seljuk Turks
The Seljuk dynasty, or Seljukids ( ; fa, سلجوقیان ''Saljuqian'', alternatively spelled as Seljuqs or Saljuqs), also known as Seljuk Turks, Seljuk Turkomans "The defeat in August 1071 of the Byzantine emperor Romanos Diogenes
by the Turk ...
in the aftermath of the
Battle of Manzikert
The Battle of Manzikert or Malazgirt was fought between the Byzantine Empire and the Seljuk Empire on 26 August 1071 near Manzikert, theme of Iberia (modern Malazgirt in Muş Province, Turkey). The decisive defeat of the Byzantine army and ...
in 1071.
History
The theme was formed around the city of Sebasteia (modern
Sivas
Sivas (Latin and Greek: ''Sebastia'', ''Sebastea'', Σεβάστεια, Σεβαστή, ) is a city in central Turkey and the seat of Sivas Province.
The city, which lies at an elevation of in the broad valley of the Kızılırmak river, is ...
). The region formed part of the
Armeniac Theme
The Armeniac Theme ( el, , ''Armeniakoi hema'), more properly the Theme of the Armeniacs (Greek: , ''thema Armeniakōi'') was a Byzantine theme (a military-civilian province) located in northeastern Asia Minor (modern Turkey).
History
The Armeni ...
from the mid-7th century.. The theme is not mentioned in any source prior to the 10th century. In 908, Sebasteia appears for the first time as a distinct fortified frontier district ('' kleisoura''), and by 911 it had been raised to the status of a full
theme
Theme or themes may refer to:
* Theme (arts), the unifying subject or idea of the type of visual work
* Theme (Byzantine district), an administrative district in the Byzantine Empire governed by a Strategos
* Theme (computing), a custom graphical ...
. As a ''kleisoura'', it was probably subordinate of the newly established theme of
Charsianon
Charsianon ( el, Χαρσιανόν) was the name of a Byzantine fortress and the corresponding theme (a military-civilian province) in the region of Cappadocia in central Anatolia (modern Turkey).
History
The fortress of Charsianon (Greek: � ...
.
The theme comprised the entirety of the Byzantine frontier regions along the middle course of the northern Euphrates. With the expansion of the Byzantine frontier, it was extended south and east as far as Melitene,
Samosata
Samsat ( ku, Samîsad), formerly Samosata ( grc, Σαμόσατα) is a small town in the Adıyaman Province of Turkey, situated on the upper Euphrates river. It is the seat of Samsat District.Tephrike, corresponding roughly to the ancient
Roman province
The Roman provinces (Latin: ''provincia'', pl. ''provinciae'') were the administrative regions of Ancient Rome outside Roman Italy that were controlled by the Romans under the Roman Republic and later the Roman Empire. Each province was rule ...
Armenia Secunda
Roman Armenia refers to the rule of parts of Greater Armenia by the Roman Empire, from the 1st century AD to the end of Late Antiquity. While Armenia Minor had become a client state and incorporated into the Roman Empire proper during the 1st c ...
and Syria Euphratensis. After the mid-10th century, however, its extent was much reduced by the creation of new smaller themes. According to
Constantine VII Porphyrogennetos
Constantine VII Porphyrogenitus (; 17 May 905 – 9 November 959) was the fourth Emperor of the Macedonian dynasty of the Byzantine Empire, reigning from 6 June 913 to 9 November 959. He was the son of Emperor Leo VI and his fourth wife, Zoe K ...
, the theme comprised two districts (''
tourma
A ''turma'' (Latin for "swarm, squadron", plural ''turmae''), (Greek: τούρμα) was a cavalry unit in the Roman army of the Republic and Empire. In the Byzantine Empire, it became applied to the larger, regiment-sized military-administrative ...
i''): Larissa (south of modern Mancınık) and Amara or Abara (modern
Amran Amran may refer to:
*'Amran Governorate, Yemen
*'Amran (Arabic: عمران) small city in western central Yemen, capital of the 'Amran Governorate
* Amran, Gujarat, a village in Jamnagar district, Gujarat, India
*Amran District, Yemen
People with ...
near
Arguvan
Arguvan ( ku, Erxewan/Arxewan) is a district of Malatya Province of Turkey. The mayor is Mehmet Kızıldaş ( CHP).
Demographics
The majority of the district is Alevi from both Kurdish and Turkish
Turkish may refer to:
*a Turkic language spo ...
or Emirköy). Both districts were briefly raised to ''kleisourai''—Larissa in and Amara/Abara under
Romanos I Lekapenos
Romanos I Lekapenos ( el, Ρωμανός Λεκαπηνός; 870 – 15 June 948), Latinized as Romanus I Lecapenus, was Byzantine emperor from 920 until his deposition in 944, serving as regent for the infant Constantine VII.
Origin
Romanos ...
—and became the seat of independent ''
strategoi
''Strategos'', plural ''strategoi'', Latinized ''strategus'', ( el, στρατηγός, pl. στρατηγοί; Doric Greek: στραταγός, ''stratagos''; meaning "army leader") is used in Greek to mean military general. In the Hellenis ...
'' by 975, leading to the theme's progressive diminution and decline in significance.
In the 10th century, the region experienced a great influx of
Armenians
Armenians ( hy, հայեր, '' hayer'' ) are an ethnic group native to the Armenian highlands of Western Asia. Armenians constitute the main population of Armenia and the ''de facto'' independent Artsakh. There is a wide-ranging diaspora ...
, who became the dominant population. After 1019/1021, Sebasteia and adjoining lands were given as a fief to the Armenian Seneqerim Ardzruni, in exchange for the cession to the Empire of his
kingdom of Vaspurakan
The Kingdom of Vaspurakan (; also transliterated as Vasbouragan from Western Armenian) was a medieval Armenian kingdom centered on Lake Van, located in what is now eastern Turkey and northwestern Iran. It was named after Vaspurakan, a province o ...
. From c. 1074, following the Byzantine defeat against the Seljuk Turks at
Manzikert
The Battle of Manzikert or Malazgirt was fought between the Byzantine Empire and the Seljuk Empire on 26 August 1071 near Manzikert, theme of Iberia (modern Malazgirt in Muş Province, Turkey). The decisive defeat of the Byzantine army and th ...
in 1071, the Ardzruni ruled the territory as independent lords, until it was conquered by the Turks around 1090.