Alexios I Komnenos
Alexios I Komnenos inherited an empire that was, in nearly every measurable way, falling apart. When he seized the Byzantine throne in 1081, the Seljuk Turks had swallowed most of Asia Minor, the Normans were hammering the western Balkans, and the treasury was in ruins. He was around twenty-four years old.
What followed was a reign of thirty-seven years that would touch the entire shape of medieval history. His desperate appeal for help against the Turks would light the fuse for the First Crusade. His daughter Anna would write the definitive account of his campaigns in a work she named the Alexiad. And the dynasty he secured would define Byzantine rule for generations after his death on the 15th of August 1118.
How did a young general who grabbed power through conspiracy manage to not only survive but revive an empire? What did it actually take to deal with the Crusader armies that flooded into his lands, armies far larger than he had wanted? And who were the remarkable women around him who made much of it possible?
Anna Dalassene, the mother of Alexios, walked into the cathedral of Hagia Sophia in February 1081 under false pretenses. She had told the guards she was going to pray. Her sons Isaac and Alexios had already slipped out of Constantinople to raise an army, and she needed to buy them time.
Her performance inside the church was extraordinary. According to Anna Komnene's account in the Alexiad, she moved slowly, as if weighted down by age and grief. At the entrance to the sanctuary she made two genuflections. On the third, she sank to the floor, seized the sacred doors, and cried out that unless her hands were cut off, she would not leave without the emperor's own cross as a guarantee of her family's safety.
Nikephoros III Botaneiates had no good options. She refused a cross offered by the official Straboromanos, calling it too small for all bystanders to witness the oath. She insisted the emperor himself send his personal cross. He obliged. The family took refuge at the convent of Petrion, where they were treated as refugees rather than prisoners. Guards there kept them informed of the latest news from court.
The conspiracy had been building for some time. The Doukas faction at court had drawn Alexios in, partly because Maria of Alania, the reigning empress, feared Nikephoros III intended to pass the throne to one of his own relatives rather than to her son Constantine Doukas. Maria had even ritually adopted Alexios as her son to cement the alliance. Both Alexios and Isaac had pledged oaths to safeguard the young Constantine's rights to the throne.
After bribing the Western troops guarding the city gates, Isaac and Alexios entered Constantinople victoriously on the 1st of April 1081.
Robert Guiscard did not wait for Alexios to settle onto his new throne. The Norman leader and his son Bohemond launched an invasion of the western Balkans almost immediately, taking Dyrrhachium and Corfu and laying siege to Larissa in Thessaly.
Alexios suffered several defeats in the early fighting. His response was to buy allies. He struck an agreement with the German king Henry IV, paying him 360,000 gold pieces in exchange for an attack on the Normans in their Italian homeland. This forced the Normans to divert resources back to their own defenses in 1083-84. Alexios also secured the allegiance of Henry, Count of Monte Sant'Angelo, who controlled the Gargano Peninsula and dated his official charters by Alexios' reign. The source describes this as the last example of Byzantine political control on peninsular Italy.
Guiscard's death in 1085 effectively ended the immediate Norman military threat, and Byzantium recovered most of its losses. But the breathing room did not last long. The Paulicians and Bogomils in Thrace revolted and allied with the Pechenegs from beyond the Danube. Alexios confiscated their lands, which triggered a further revolt near Philippopolis. The commander of the field army in the west, Gregory Pakourianos, was defeated and killed in that battle.
By 1090, the Pechenegs had invaded Thrace again. Simultaneously, Tzachas, the brother-in-law of the Sultan of Rum, launched a fleet to attempt a joint siege of Constantinople itself. Alexios neutralized this dual threat by allying with a horde of 40,000 Cumans. On the 29th of April 1091, the combined Byzantine-Cuman force annihilated the Pechenegs at the Battle of Levounion in Thrace.
In 1095, Alexios sent ambassadors to Pope Urban II at the Council of Piacenza. He was looking for mercenary soldiers to help push back the Seljuks in Asia Minor. What arrived instead was something he had not anticipated and was not prepared for.
Urban preached the First Crusade at the Council of Clermont later that same year. The first wave to reach Byzantine territory was what became known as the People's Crusade: a mass of mostly unarmed poor peasants and serfs led by the preacher Peter the Hermit. The source describes them as fleeing hunger in their home regions toward a promised land. Alexios was not ready to supply or manage them. His Balkan possessions were pillaged by the very allies he had sought. His solution was to hustle them across into Asia Minor as quickly as possible. There, in October 1096, they were massacred by the Turks of Kilij Arslan I at the Battle of Civetot.
The second wave, the so-called Prince's Crusade, was a far more formidable force. Godfrey of Bouillon, Bohemond of Taranto, and Raymond IV of Toulouse each led separate contingents to Constantinople. Alexios met each leader individually as they arrived. From each he extracted oaths of homage and a promise to return conquered lands to Byzantium. In exchange he supplied their armies with provisions as they crossed into Asia.
The results, at least initially, were significant. The siege of Nicaea forced the city's surrender to the emperor in 1097. The Crusader victory at Dorylaion allowed Alexios to reclaim much of western Asia Minor. John Doukas re-established Byzantine rule in Chios, Rhodes, Smyrna, Ephesus, Sardis, and Philadelphia between 1097 and 1099. In 1099, Alexios sent a Byzantine fleet of ten ships to assist in capturing Laodicea and coastal towns as far as Tripoli.
Bohemond, however, refused to return Antioch despite his oath. He eventually went to war with Alexios in the Balkans, was blockaded by Byzantine forces, and under the Treaty of Deabolis in 1108 agreed to become a vassal of the emperor.
Alexios had crowned his mother Anna Dalassene with the title of Augusta, bypassing his wife Irene Doukaina who held the rightful claim to that honor. It was an irregular and pointed act. The source describes Anna Dalassene as an able politician and the effective administrator of the empire during Alexios' long absences on military campaigns.
She was constantly at odds with her daughter-in-law Irene. She also assumed total responsibility for the upbringing and education of her granddaughter Anna Komnene. The daughter Anna would grow up to write the Alexiad, the primary historical account of her father's reign, and later, after her father's death, she would attempt unsuccessfully to seize the throne herself before withdrawing to a monastery to finish her history.
Maria of Alania, the Georgian empress who had helped make the coup possible, occupied a complicated position at court after Alexios took power. Rumors circulated that Alexios was her lover, and for a time he considered marrying her. It was Anna Dalassene who intervened, arranging instead for Alexios to marry Irene Doukaina, the granddaughter of Caesar John Doukas. This was a political calculation: the Doukas family would not have supported Alexios otherwise. To keep them in line, he also restored Maria's son Constantine Doukas as co-emperor.
The situation changed sharply in 1087 when Alexios' first son, John II Komnenos, was born. Anna Komnene's engagement to Constantine was dissolved. Maria of Alania was stripped of her imperial title and retired to a monastery. Constantine Doukas lost his status as co-emperor. The birth of a male heir had reshuffled every political arrangement that Anna Dalassene had built.
No Byzantine emperor faced more internal rebellions than Alexios. The source lists them in almost numbing succession: a conspiracy involving senators and army officers in 1084, uncovered before it spread; the Seljuk emir Tzachas who declared himself emperor in 1092; Constantine Humbertopoulos, who had actually helped Alexios take power in 1081, then conspired against him in 1091 with an Armenian named Ariebes.
The list extends to Theodore Gabras, the quasi-independent governor of Trebizond, and his son Gregory; to Michael Taronites, Alexios' own brother-in-law; to Nikephoros Diogenes, the son of a former emperor; and to an impostor calling himself Leo Diogenes. Crete had its own rebel, Karykes. Cyprus had Rhapsomates, attempting to carve out an independent kingdom.
After the First Crusade, the plots continued. In 1106, a senator named Salomon conspired with four brothers of the Anemas family. In 1107, an illegitimate descendant of a Bulgarian prince named Aron hatched a plan to murder Alexios while he was camped near Thessalonica. The conspirators tried to drive the empress Irene away by placing pamphlets mocking and slandering her in her tent. The search for the author of those pamphlets exposed the entire conspiracy. Aron was banished rather than executed, because Bulgarian royal blood also flowed in the veins of the empress herself.
Alexios' approach to suppression was calibrated. In 1084 he merely banished the wealthiest plotters and confiscated their estates, deliberately concealing the extent of the conspiracy. His tolerance had limits, though. One of his last public acts was burning the Bogomil leader Basil at the stake after engaging him personally in theological debate.
In 1092, Alexios replaced the debased Byzantine gold coinage with a new standard. The old solidus, which had been minted in two degraded forms called the tetarteron and the histamenon, was discontinued. In its place came the hyperpyron, a gold coin of generally .900 to .950 fineness weighing 4.45 grams.
The new system was built in layers. The hyperpyron sat at the top. Below it came the electrum aspron trachy, worth one third of a hyperpyron and composed of roughly 25% gold and 75% silver. Then came the billon aspron trachy, also called the stamenon, valued at 48 to the hyperpyron and containing a 7% silver wash. At the bottom sat copper coins, the tetarteron and the noummion, worth 18 and 36 to the billon aspron trachy respectively.
The reform was a direct response to decades of monetary debasement that had eroded confidence in Byzantine currency. By the time Alexios introduced the hyperpyron, the empire's ability to pay its armies, conduct diplomacy, and maintain the loyalty of allied rulers depended on a coin people could trust. The 360,000 gold pieces paid to Henry IV during the Norman wars had to mean something. The hyperpyron would remain the standard Byzantine gold coin for nearly two centuries after Alexios introduced it.
Every Byzantine emperor who reigned after Alexios I Komnenos was related to him by either descent or marriage. The source states this as a plain fact, and it captures something essential about what he had built.
He had broken with a long tradition of imperial exclusivity, pulling powerful noble families into his own extended kinship network rather than keeping them at arm's distance. Those who would not join were stripped of power and prestige. To reward those who did, he created new court titles: panhypersebastos, given to Nikephoros Bryennios; sebastokrator, given to his brother Isaac Komnenos. These dignities placed family loyalty above the older meritocratic bureaucracy, a trade-off the source acknowledges was successful at first but gradually undermined administrative effectiveness.
His daughter Anna, in the Alexiad, credited his successes with the Crusaders to policy and diplomacy. Latin historians of the Crusade attributed the same outcomes to treachery and deception. Both assessments were probably right in their own way.
His final military campaign came in 1116, when Alexios was already terminally ill. He still conducted defensive operations in Bithynia and Mysia against the Seljuk Sultan of Iconium, Malik Shah. In 1117 he pushed his army deep into the Anatolian Plateau and defeated the sultan at the Battle of Philomelion. He died the following year, and was succeeded by his son John II Komnenos, whom he had crowned co-emperor at the age of five back in 1092.
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Common questions
Who was Alexios I Komnenos and when did he rule?
Alexios I Komnenos was a Byzantine emperor who ruled from 1081 to 1118. Born around 1057, he seized the throne by leading a rebellion against Emperor Nikephoros III Botaneiates and died on the 15th of August 1118, succeeded by his son John II Komnenos.
How did Alexios I Komnenos trigger the First Crusade?
In 1095, Alexios sent ambassadors to Pope Urban II at the Council of Piacenza requesting mercenary forces against the Seljuk Turks. Urban responded by preaching the First Crusade at the Council of Clermont later that year, producing far larger armies than Alexios had sought.
What was the Alexiad and who wrote it?
The Alexiad was a political and military history written by Anna Komnene, the daughter of Alexios I. She named it after her father. It is the primary historical account of his reign and campaigns.
How did Alexios I Komnenos defeat the Pechenegs?
Alexios defeated the Pechenegs on the 29th of April 1091 at the Battle of Levounion in Thrace by allying with a horde of 40,000 Cumans. This victory ended the Pecheneg threat to the Byzantine Empire.
What monetary reform did Alexios I Komnenos introduce?
In 1092, Alexios replaced the debased solidus with the hyperpyron, a gold coin of generally .900 to .950 fineness weighing 4.45 grams. He introduced it alongside the electrum aspron trachy, the billon aspron trachy, and copper coins to create a tiered currency system.
What role did Anna Dalassene play in the reign of Alexios I?
Anna Dalassene, the mother of Alexios I, was the effective administrator of the Byzantine Empire during his long military absences. Alexios had her crowned Augusta in an irregular move that bypassed his wife Irene Doukaina, and she was central to orchestrating the 1081 coup that brought him to power.
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3 references cited across the entry
- 2The People's CrusadeMelissa Snell — 2018
- 3The Economic and Monetary Policy of the Byzantine Empire under Alexios I KomnenosMedievalists.net — 2012-05-28