The House of Doukas,
Latinized as Ducas ( el, Δούκας; feminine: Doukaina/Ducaena, Δούκαινα; plural: Doukai/Ducae, Δοῦκαι), from the
Latin title ''
dux'' ("leader", "general",
Hellenized as
'ðouks'', is the name of a
Byzantine Greek
Medieval Greek (also known as Middle Greek, Byzantine Greek, or Romaic) is the stage of the Greek language between the end of classical antiquity in the 5th–6th centuries and the end of the Middle Ages, conventionally dated to the Ottoman co ...
noble family, whose branches provided several notable generals and rulers to the
Byzantine Empire in the 9th–11th centuries. A maternally-descended line, the Komnenodoukai, founded the
Despotate of Epirus
The Despotate of Epirus ( gkm, Δεσποτᾶτον τῆς Ἠπείρου) was one of the Greek successor states of the Byzantine Empire established in the aftermath of the Fourth Crusade in 1204 by a branch of the Angelos dynasty. It claim ...
in the 13th century, with another branch ruling over
Thessaly.
The continuity of descent amongst the various branches of the original, middle Byzantine family is not clear, and historians generally recognize several distinct groups of Doukai based on their occurrence in the contemporary sources. Polemis, who compiled the only overview work on the bearers of the Doukas name, in view of this lack of genealogical continuity "it would be a mistake to view the groups of people designated by the ''
cognomen'' of Doukas as forming one large family".
History
Origins
Nothing is known for certain about the family's origin. Later tradition, mentioned by the historian
Nikephoros Bryennios, held that they descended from a cousin of the
Roman emperor Constantine I
Constantine I ( , ; la, Flavius Valerius Constantinus, ; ; 27 February 22 May 337), also known as Constantine the Great, was Roman emperor from AD 306 to 337, the first one to convert to Christianity. Born in Naissus, Dacia Mediterranea ...
who had migrated to
Constantinople in the 4th century and allegedly became the city's governor with the title of ''
doux''. This tradition is, however, evidently an invention meant to glorify the family, at the time the Empire's ruling dynasty, by 11th-century court chroniclers.
[.] In fact, it is more likely that the surname derives from the relatively common military rank of ''doux''. Some authors have raised the possibility of an
Armenian descent, but all evidence suggests that the Doukai were native-born
Greeks, probably from
Paphlagonia in north-central
Anatolia, where their estates were located.
Doukai of the early 10th century

The first representative of the family appears in the mid-9th century, during the regency of Empress
Theodora (r. 842–855), when he was sent to forcibly convert the
Paulicians to Orthodoxy. He is only known as "the son of Doux", although
Skylitzes
John Skylitzes, commonly List of Latinised names, Latinized as Ioannes, la, Johannes, label=none, la, Iōannēs, label=none Scylitzes ( el, Ἰωάννης Σκυλίτζης, ''Iōánnēs Skylítzēs'', or el, Σκυλίτση, ''Skylíts� ...
interpolates the name of Andronikos, probably in confusion with Andronikos Doukas (see next). This name is also used by some modern sources--''e.g.'', in the ''Prosopographie der mittelbyzantinischen Zeit''
Andronikos #433.
The first branch of the family to achieve prominence was in the early 10th century (they are usually referred to with the archaic form ''Doux'' rather than ''Doukas'' in the sources), with
Andronikos Doukas and his son
Constantine Doukas. Both were senior generals during the reign of Emperor
Leo VI the Wise (r. 886–912). In circa 904, Andronikos engaged in an unsuccessful rebellion and was forced to flee to
Baghdad where he was killed circa 910. Constantine managed to escape and was restored to high office, becoming
Domestic of the Schools. He was killed, however, along with his son Gregory and nephew Michael, in an unsuccessful coup in June 913.
[.] These deaths, along with the
castration
Castration is any action, surgical, chemical, or otherwise, by which an individual loses use of the testicles: the male gonad. Surgical castration is bilateral orchiectomy (excision of both testicles), while chemical castration uses pharmaceut ...
and
exile
Exile is primarily penal expulsion from one's native country, and secondarily expatriation or prolonged absence from one's homeland under either the compulsion of circumstance or the rigors of some high purpose. Usually persons and peoples suf ...
of Constantine's younger son Stephen and the death of a Nicholas Doukas (of uncertain relation to the others) at the
Battle of Katasyrtai in 917, mark the end of the first group of Doukai recorded in Byzantine sources. It is likely, as the 12th-century historian
Zonaras records, that the Doukai line died out, and that the later bearers of the name were descendants through the female line only.
Lydoi-Doukai under Basil II
Towards the end of the 10th century, there appeared a second family, sometimes known as ''Lydoi'' ("the
Lydia
Lydia (Lydian language, Lydian: 𐤮𐤱𐤠𐤭𐤣𐤠, ''Śfarda''; Aramaic: ''Lydia''; el, Λυδία, ''Lȳdíā''; tr, Lidya) was an Iron Age Monarchy, kingdom of western Asia Minor located generally east of ancient Ionia in the mod ...
ns", likely indicating their origin). Its members were Andronikos Doux Lydos and his sons, Christopher and Bardas, the latter known by the sobriquet ''Mongos'' ("hoarse"). It is unclear whether the ''doux'' in Andronikos's name is a surname or a military rank; some scholars consider them as belonging to the Doukas clan, although the exact relation, if any, with the earlier Doukai is impossible to ascertain. The family was involved in the 976–979 rebellion of
Bardas Skleros against Emperor
Basil II (r. 976–1025), but the sons were later pardoned and resumed their careers. Bardas the ''Mongos'' is attested as late as 1017, when he led a military expedition against the
Khazars.
[.]
Doukas imperial dynasty

The third group of the family, the Doukai of the 11th century, was the more numerous and distinguished one, providing several generals and governors, and founding the Doukid dynasty which ruled Byzantium from 1059 to 1081. These Doukai seem to have come from
Paphlagonia, and were exceedingly wealthy, possessing extensive estates in
Anatolia. Again, the relationship of this group with the Doukai of the 9th and 10th centuries is unclear; the contemporary writers
Michael Psellos
Michael Psellos or Psellus ( grc-gre, Μιχαὴλ Ψελλός, Michaḗl Psellós, ) was a Byzantine Greek monk, savant, writer, philosopher, imperial courtier, historian and music theorist. He was born in 1017 or 1018, and is believed to hav ...
and
Nicholas Kallikles Nicholas Kallikles ( gr, Νικόλαος Καλλικλῆς, Nikólaos Kalliklēs) was a prominent Greek physician and a leading court poet active in the Byzantine court in Constantinople during the reigns of Alexios I Komnenos () and John II Komn ...
affirm such a relationship, but Zonaras openly questioned it.
[.]
The most famous members of this group were the dynasty's founder, Emperor
Constantine X Doukas
Constantine X Doukas or Ducas ( el, Κωνσταντῖνος Δούκας, ''Kōnstantinos X Doukas'', 1006 – 23 May 1067), was Byzantine emperor from 1059 to 1067. He was the founder and first ruling member of the Doukid dynasty. Duri ...
(r. 1059–1067), his brother
John Doukas, ''
katepano'' and later ''
Caesar
Gaius Julius Caesar (; ; 12 July 100 BC – 15 March 44 BC), was a Roman people, Roman general and statesman. A member of the First Triumvirate, Caesar led the Roman armies in the Gallic Wars before defeating his political rival Pompey in Caes ...
'', Constantine's son
Michael VII Doukas (r. 1071–1078), Michael's younger brothers,
Konstantios and
Andronikos Doukas, Michael's son and co-emperor
Constantine Doukas and John's son, the general
Andronikos Doukas.
During this period, the family intermarried with other aristocratic clans: before becoming emperor, Constantine X had married into the powerful
Dalassenoi family, and took as a second wife
Eudokia Makrembolitissa, niece of the
Patriarch Michael Keroularios. Further dynastic matches were made with the clans of the Anatolian military aristocracy, including the
Palaiologoi and the
Pegonitai.
[.] The most important connection, however, was to the
Komnenoi: in 1077,
Alexios Komnenos
Alexios I Komnenos ( grc-gre, Ἀλέξιος Κομνηνός, 1057 – 15 August 1118; Latinized Alexius I Comnenus) was Byzantine emperor from 1081 to 1118. Although he was not the first emperor of the Komnenian dynasty, it was during ...
, then a general and later emperor (r. 1081–1118), married
Irene Doukaina, the great-niece of Constantine X; thereafter, the family name Komnenodoukas was often used. This marriage alliance was crucial for Alexios's own rise to the purple: his marriage to a Doukaina made him senior to his elder brother Isaac, and it was Doukai financial and political support that largely facilitated the successful and bloodless coup that brought him to the throne.
[.]
Under the Komnenoi
Their association with the Komnenoi helped ensure the continued prominence and prestige of the Doukas name at the apex of the Byzantine aristocracy into the
Komnenian period, and the presence of the family's members amongst the higher officials of the Byzantine state. During the reign of Alexios I, the Doukai continued to play an important role: Constantine Doukas was recognized as heir-apparent and affianced to
Anna Komnene (although he lost his title when the future
John II Komnenos was born); and Irene Doukaina's brothers, the ''
protostrator''
Michael Doukas and the ''
megas doux''
John Doukas were among the most prominent military leaders of the late 11th century.
During the 12th century, the prestige of the Doukas name meant that it was often taken as a second surname by members of other families, even if remotely (and usually
matrilineally) linked to the actual Doukai, who became relatively obscure after the turn of the century. It is hence impossible to clearly distinguish the numerous holders of the name or to discern their exact relationship with the 11th-century Doukid dynasty. The actual bloodline of Constantine X died out probably before 1100, and the last known descendants of his brother, the ''Caesar'' John, lived in the first half of the 12th century. The majority of the 12th-century bearers of the name were therefore most likely members of other families, linked through marriage with the Doukai, who chose to emphasize this relationship due to the prestige the name conferred.
[.]
Later branches
In this way, mingled with other noble families or adopted ''de novo'' even by humble families unrelated to the original lineage, the Doukas name survived into the last centuries of the Byzantine Empire. A prominent example of the Late Byzantine period were the Komnenodoukai of the
Despotate of Epirus
The Despotate of Epirus ( gkm, Δεσποτᾶτον τῆς Ἠπείρου) was one of the Greek successor states of the Byzantine Empire established in the aftermath of the Fourth Crusade in 1204 by a branch of the Angelos dynasty. It claim ...
in northwestern Greece, founded by
Michael I Komnenos Doukas
Michael I Komnenos Doukas, Latinized as Comnenus Ducas ( el, Μιχαήλ Κομνηνός Δούκας, Mikhaēl Komnēnos Doukas), and in modern sources often recorded as Michael I Angelos, a name he never used, was the founder and first ruler ...
and other descendants of
John Doukas, a grandson of Alexios I Komnenos and Irene Doukaina. From them the surname "Doukas" was used by the Greek, and later Serbian, rulers of Epirus and
Thessaly until the 15th century. Other examples include
John III Doukas Vatatzes
John III Doukas Vatatzes, Latinized as Ducas Vatatzes ( el, Ιωάννης Δούκας Βατάτζης, ''Iōannēs Doukas Vatatzēs'', c. 1192 – 3 November 1254), was Emperor of Nicaea from 1221 to 1254. He was succeeded by his son, known ...
,
Nicaean emperor (r. 1221–1254) and his relatives, the late Byzantine historian
Doukas, and the ''
megas papias''
Demetrios Doukas Kabasilas in the mid-14th century.
The name spread far and wide across the Greek-speaking world as well as in
Albania, and remains fairly common to this day. Among the more notable bearers of the Doukas name in the post-Byzantine period were the 16th-century Cretan scholar
Demetrius Ducas, the 17th-century rulers of
Moldavia George Ducas and
Constantine Ducas
Constantine X Doukas or Ducas ( el, Κωνσταντῖνος Δούκας, ''Kōnstantinos X Doukas'', 1006 – 23 May 1067), was Byzantine emperor from 1059 to 1067. He was the founder and first ruling member of the Doukid dynasty. Duri ...
(their descent is variously given as Greek,
Vlach or
Albanian
Albanian may refer to:
*Pertaining to Albania in Southeast Europe; in particular:
**Albanians, an ethnic group native to the Balkans
**Albanian language
**Albanian culture
**Demographics of Albania, includes other ethnic groups within the country ...
) or the 19th-century scholar and educationalist
Neophytos Doukas. Several variations also developed, such as Doukakes (Δουκάκης) (cf. former
Massachusetts state governor
Michael Dukakis), Doukopoulos (Δουκόπουλος), Doukatos (Δουκάτος), Makrodoukas or Makrydoukas (Μακροδούκας/Μακρυδούκας), etc. Other variants like Doukaites (Δουκαΐτης) or Doukides (Δουκίδης) seem to derive not from the surname, but from a locality and a first name "Doukas" respectively.
[.]
Family tree of the House of Doukas
See also
*
History of the Byzantine Empire
*
Byzantine Empire under the Doukas dynasty
The Byzantine Empire was ruled by emperors of the Doukas dynasty between 1059 and 1081. There are six emperors and co-emperors of this period: the dynasty's founder, Emperor Constantine X Doukas (r. 1059–1067), his brother John Doukas, ''ka ...
References
Sources
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External links
{{Royal houses of Greece