Alexios I seizes the Byzantine throne
Labels: Alexios I, Nikephoros IIIAlexios I Komnenos overthrew Nikephoros III Botaneiates and began a long reign that anchored the Komnenian recovery, rebuilding imperial authority after decades of instability.
Komnenian Restoration under Alexios I to the End of the Komnenoi (1081–1185)
Alexios I crowned Byzantine emperor
Labels: Alexios I, CoronationAlexios’s coronation formalized the new regime and opened the period often called the Komnenian Restoration in Byzantine political and military history.
Normans defeat Alexios at Dyrrhachium
Labels: Dyrrhachium, Robert GuiscardAt Dyrrhachium (modern Durrës), Robert Guiscard’s Normans beat Alexios in a major early test of the new emperor, intensifying the Norman threat in the western Balkans.
Alexios destroys the Pechenegs at Levounion
Labels: Levounion, PechenegsWith crucial Cuman support, Alexios won a decisive victory over the Pechenegs at Levounion, helping secure Byzantium’s European frontiers and stabilizing the regime.
Urban II receives Alexios’s plea at Piacenza
Labels: Pope Urban, Piacenza CouncilAt the Council of Piacenza, Pope Urban II heard envoys from Alexios requesting military help against Turkish pressure in Anatolia—an important prelude to the First Crusade.
Treaty of Devol binds Bohemond to Alexios
Labels: Treaty of, BohemondAfter Bohemond’s failed campaign against Byzantium, the Treaty of Devol attempted to make the Principality of Antioch a Byzantine vassal and reaffirm imperial claims in the crusader East.
Death of Alexios I; John II succeeds
Labels: Alexios I, John IIAlexios I died after a transformative reign; his son John II Komnenos took power, continuing the dynasty’s emphasis on personal leadership and sustained campaigning.
John II defeats Pechenegs at Beroia
Labels: John II, BeroiaJohn II’s victory over the Pechenegs at Beroia helped end them as an independent threat and reinforced imperial control and security in the Balkans.
Death of John II; Manuel I becomes emperor
Labels: John II, Manuel IJohn II died in Cilicia after a hunting accident; Manuel I Komnenos succeeded him, inaugurating a reign marked by ambitious diplomacy and military interventions across the Mediterranean world.
Byzantines defeat Hungary at Sirmium
Labels: Sirmium, Byzantine EmpireA major Byzantine victory over Hungary at Sirmium consolidated imperial influence in the western Balkans and strengthened Manuel I’s regional position.
Seljuks defeat Manuel at Myriokephalon
Labels: Myriokephalon, Seljuk TurksAt Myriokephalon, Manuel’s army was ambushed and forced into a costly retreat, widely seen as ending realistic hopes of restoring deep Byzantine control over central Anatolia.
Death of Manuel I; Alexios II succeeds
Labels: Manuel I, Alexios IIManuel I died and was succeeded by his minor son Alexios II, ushering in a contentious regency and factional conflict that destabilized the Komnenian political order.
Massacre of the Latins in Constantinople
Labels: Massacre of, ConstantinopleAnti-Latin violence erupted in Constantinople amid political crisis and resentment of Western commercial dominance, severely worsening Byzantine–Latin relations.
Andronikos I crowned co-emperor with Alexios II
Labels: Andronikos Komnenos, Co-emperorshipAndronikos Komnenos entered Constantinople as the young emperor’s “protector,” then secured his own elevation as co-emperor—an essential step in his usurpation.
Alexios II killed; Andronikos rules alone
Labels: Alexios II, Andronikos ISoon after becoming co-emperor, Andronikos had Alexios II murdered (strangled) and assumed sole power, marking the end of the main Komnenian line’s rule.
Normans sack Thessalonica
Labels: Thessalonica, Kingdom ofForces from the Kingdom of Sicily captured and sacked Thessalonica, a severe shock that exposed imperial weakness and helped trigger revolt against Andronikos in the capital.
Andronikos I overthrown and killed
Labels: Andronikos I, Isaac IIA revolt in Constantinople proclaimed Isaac II Angelos emperor; Andronikos I was captured and executed, ending the Komnenos dynasty’s rule (1081–1185).
Timeline
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Komnenian Restoration under Alexios I to the End of the Komnenoi (1081–1185)
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