
Coin of Constantine X.
'Constantine X Doukas' or 'Ducas' (
Greek: Κωνσταντίνος Ι΄ Δούκας, ''Kōnstantinos X Doukas''), (
1006 – May,
1067) was emperor of the
Byzantine Empire from 1059 to 1067.
Reign
Constantine Doukas was the son of Andronikos Doukas, a
Paphlagonian nobleman who may have served as governor of the theme of
Moesia. Constantine gained influence after he married, as his second wife,
Eudokia Makrembolitissa, the niece of Patriarch
Michael Keroularios. In 1057, Constantine supported the usurpation of
Isaac I Komnenos, but gradually sided with the court bureaucracy against the new emperor's reforms. In spite of this tacit opposition, Constantine was chosen as successor by the ailing Isaac in November, 1059, under the influence of
Michael Psellos. Isaac abdicated and on
November 24,
1059, Constantine X Doukas was crowned emperor.
The new emperor quickly associated two of his young sons in power, appointed his brother
John Doukas as ''kaisar'' (
Caesar) and embarked on a policy favorable to the interests of the court bureaucracy and the church. Severely undercutting the training and financial support for the armed forces, Constantine X fatally weakened Byzantine defences at a crucial point of time, coinciding with the westward advance of the
Seljuk Turks and their Turcoman allies.
Constantine became naturally unpopular with the supporters of Isaac within the military aristocracy, who attempted to assassinate him in 1061; he was also unpopular with the general population, after he raised taxes to try to pay the army at long last.
Constantine lost most of Byzantine
Italy to the
Normans under
Robert Guiscard, except for the territory around
Bari, though a resurgence of interest in retaining
Apulia occurred under his watch and he appointed at least four
catepans of Italy:
Miriarch,
Maruli,
Sirianus, and
Mabrica. He also suffered invasions from
Alp Arslan in
Asia Minor in 1064 and the
Uzes in the
Balkans in 1065. Already old and unhealthy when he came to power, he died on
May 22,
1067 and was succeeded by his young sons under the regency of their mother Eudokia Makrembolitissa.
Family
By his first wife, a daughter of Constantine Dalassenos, Constantine X Doukas had no known children. By his second wife,
Eudokia Makrembolitissa, Constantine X had the following issue:
★
Michael VII Doukas, who succeeded as emperor.
★ Andronikos Doukas, co-emperor from 1068 to 1078.
★ Konstantios Doukas, co-emperor from c. 1060 to 1078, died 1081.
★ Anna Doukaina, a nun
★ Theodora Doukaina, who married
Domenico Selvo,
Doge of Venice.
★ Zoe Doukaina, who married Adrianos Komnenos, a brother of Emperor Alexios I Komnenos.
References
★ (primary source)
Michael Psellus, ''Chronographia''.
★ ''The
Oxford Dictionary of Byzantium'', Oxford University Press, 1991.