Byzantine emperor (1057–1059), the first of the Komnenos house, a soldier raised to the throne by military revolt who tried to reform the state before abdicating to become a monk.
Isaac I Komnenos was Byzantine emperor from 1057 to 1059, the first member of the Komnenos family to hold the throne. A distinguished general, he was raised to power by a revolt of the Anatolian military aristocracy against the civil bureaucracy that had come to dominate Constantinople and against the aged emperor Michael VI.
Once in power, Isaac set out to restore the empire's strained finances and military strength, cutting court expenditure and reclaiming property from a swollen bureaucracy and Church — policies that made him powerful enemies. His famous coins show him holding a drawn sword, a blunt assertion that he had taken the throne by arms. After barely two years, a serious illness led him to abdicate and retire to a monastery, naming Constantine X Doukas his successor.
Isaac was born about 1007 into the Komnenoi, a rising family of the Anatolian military aristocracy. He made his career in the army, becoming commander of the eastern forces, at a time when the great soldiers of the provinces were increasingly at odds with the civil officials and courtiers who ran the empire from Constantinople and who, they felt, were starving the army and mismanaging the defence of the frontiers.
When the elderly bureaucrat-emperor Michael VI slighted the leading generals in 1057, they proclaimed Isaac emperor and marched on the capital.
Isaac I is remembered as a soldier's emperor — direct, energetic, and impatient with the elaborate, money-draining machinery of the Constantinopolitan court. The historian Michael Psellos, who knew him, portrays a vigorous and self-confident ruler who believed the empire could be set right by firm, frugal, soldierly government, and who set about it with more boldness than tact.
That bluntness was both his strength and his undoing. His readiness to confront the bureaucracy and even the Church — deposing the formidable patriarch Michael Keroularios — showed real courage and clarity of purpose, but it isolated him from the very interests whose support an emperor needed. The sword on his coinage captured the man: a ruler who trusted in force and plain reform, and who, when illness struck, chose the monastery over a fight to hold a throne he had come to find wearisome.
Isaac came to power determined to repair the damage done by decades of extravagant and negligent government. He slashed court pensions and expenditure, revoked grants made by his predecessors, and reclaimed revenues and estates from the bureaucracy and from the wealthy monasteries and Church — even confiscating surplus ecclesiastical property. When the patriarch Michael Keroularios resisted, Isaac had him arrested and deposed.
These measures, however necessary, turned the civil aristocracy and the Church against him and won him few friends. Late in 1059, after a chill caught while hunting turned into a grave illness, Isaac believed himself dying. He abdicated, passed over his own brother, and named the civil aristocrat Constantine Doukas as his successor, then withdrew to the monastery of Stoudios.
Isaac recovered somewhat but kept to his monastic retirement, living out his days as a monk at Stoudios and, by tradition, working humbly among the brethren. He died about 1060. His abdication handed the empire to the civil aristocracy under Constantine X, whose neglect of the army would soon have grave consequences.
Isaac I is remembered as the first Komnenos emperor and as a might-have-been reformer whose brief reign glimpsed, but could not achieve, the restoration of Byzantine strength. His fall returned power to the civil bureaucracy whose misgovernment helped bring on the disaster of Manzikert a dozen years later. Yet his family's moment had only been postponed: in 1081 his great-nephew Alexios I Komnenos would seize the throne and found the Komnenian dynasty that ruled the empire's twelfth-century revival.