Diocletian's Tetrarchy

E5869

Roman imperial institution political reform system of government

Diocletian's Tetrarchy was a late 3rd-century system of rule that divided imperial authority among four co-emperors to stabilize and more effectively govern the Roman Empire.

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All labels observed (23)

Label	Occurrences
Tetrarchy	29
Diocletianic reforms	6
Tetrarchic period	4
Diocletianic Tetrarchy	2
Diocletianic provincial reorganization	2
First Tetrarchy	2
Tetrarchy of Diocletian	2
Diocletian's Tetrarchy canonical	1
Diocletianic Reforms	1
Diocletianic administrative reforms	1
Diocletianic provincial reforms	1
Eastern Empire under Diocletian	1
Roman Tetrarchy	1
Second Tetrarchy	1
Tetrarchic Roman Empire	1
Tetrarchic court system	1
Tetrarchic ideology	1
Tetrarchic period of the Roman Empire	1
Tetrarchy (late phase)	1
Tetrarchy system	1
Western Empire under Maximian	1
end of the Crisis of the Third Century	1
reign of Diocletian	1

Statements (50)

Predicate	Object
instanceOf	Roman imperial institution ⓘ political reform ⓘ system of government ⓘ
administrativeDivision	Danubian region under Galerius ⓘ Diocletian's Tetrarchy self-linksurface differs ⓘ surface form: Eastern Empire under Diocletian Gaul and Britain under Constantius Chlorus ⓘ Diocletian's Tetrarchy self-linksurface differs ⓘ surface form: Western Empire under Maximian
appliesTo	Roman Empire ⓘ
associatedDeity	Heracles ⓘ surface form: Hercules Jupiter ⓘ
basedOn	division of civil administration ⓘ division of military commands ⓘ
beganInCentury	3rd century ⓘ
beganInDecade	290s ⓘ
beganInYear	293 ⓘ
capitalCity	Augusta Treverorum ⓘ Milan ⓘ surface form: Mediolanum Nicomedia (traditionally) ⓘ surface form: Nicomedia Sirmium ⓘ
economicReformContext	Diocletian's price edict ⓘ
endedBy	civil wars of the early 4th century ⓘ rise of Constantine the Great ⓘ
endedInCentury	4th century ⓘ
endedInDecade	310s ⓘ
hasAlternativeName	Rule of Four ⓘ Diocletian's Tetrarchy ⓘ surface form: Tetrarchy
hasEmperor	Constantius Chlorus ⓘ Diocletian ⓘ Galerius ⓘ Maximian ⓘ
hasJuniorEmperorTitle	Caesar ⓘ
hasNumberOfRulers	4 ⓘ
hasSeniorEmperorTitle	Augustus ⓘ
hasTitleStructure	two Augusti and two Caesars ⓘ
historicalSignificance	marked the end of the Crisis of the Third Century ⓘ precursor to the later division between Eastern and Western Roman Empires ⓘ
initiatedBy	Diocletian ⓘ
introducedConcept	collegial rule by multiple emperors ⓘ division of the empire into administrative regions ⓘ orderly imperial succession ⓘ
legacy	influenced later Roman imperial succession practices ⓘ provided model for shared imperial authority ⓘ
legalReformContext	Diocletianic reforms ⓘ
militaryContext	Crisis of the Third Century ⓘ
purpose	defense of imperial frontiers ⓘ more effective governance of the Roman Empire ⓘ prevention of usurpation ⓘ stabilization of imperial rule ⓘ
religiousIdeology	Jovian and Herculian divine associations ⓘ emperor worship ⓘ

Referenced by (63)

Full triples — surface form annotated when it differs from this entity's canonical label.

Roman Empire → keyReform → Diocletian's Tetrarchy ⓘ

Diocletian's Tetrarchy → hasAlternativeName → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Diocletian's Tetrarchy → administrativeDivision → Diocletian's Tetrarchy self-linksurface differs ⓘ

this entity surface form: Eastern Empire under Diocletian

Diocletian's Tetrarchy → administrativeDivision → Diocletian's Tetrarchy self-linksurface differs ⓘ

this entity surface form: Western Empire under Maximian

Crisis of the Third Century → followedBy → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Diocletianic Persecution → historicalPeriod → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Rule of Four → alsoKnownAs → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Rule of Four → partOf → Diocletian's Tetrarchy ⓘ

this entity surface form: Diocletianic reforms

Diocletian's price edict → partOf → Diocletian's Tetrarchy ⓘ

this entity surface form: Diocletianic Reforms

Diocletian's price edict → timePeriod → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Maximian → memberOf → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Maximian → era → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchic period

Caesar → formalizedInSystem → Diocletian's Tetrarchy ⓘ

subject surface form: Caesar (imperial title)

this entity surface form: Tetrarchy

Galerius → tetrarchyMemberOf → Diocletian's Tetrarchy ⓘ

this entity surface form: First Tetrarchy

Galerius → tetrarchyMemberOf → Diocletian's Tetrarchy ⓘ

this entity surface form: Second Tetrarchy

Constantius Chlorus → memberOf → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Licinius → governmentSystem → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy (late phase)

Constantinian dynasty → precededBy → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Constantinian civil war → relatedTo → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Maxentius → dynasty → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchic period

Maxentius → associatedWith → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Galatia → integratedInto → Diocletian's Tetrarchy ⓘ

this entity surface form: Diocletianic provincial reforms

Diocles → contributedTo → Diocletian's Tetrarchy ⓘ

this entity surface form: end of the Crisis of the Third Century

Diocles → associatedWith → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Roman imperial iconography → developedUnder → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

court of Constantine the Great → influencedBy → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchic court system

court of Constantine the Great → influencedBy → Diocletian's Tetrarchy ⓘ

this entity surface form: Diocletianic administrative reforms

Prisca → era → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Martyrs of Palestine → historicalContext → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy of Diocletian

Edict of Toleration by Galerius → politicalContext → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Gallia Narbonensis → incorporatedInto → Diocletian's Tetrarchy ⓘ

this entity surface form: Diocletianic provincial reorganization

Valeria → era → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

diocese of the Gauls → introducedAsPartOf → Diocletian's Tetrarchy ⓘ

subject surface form: Diocese of the Gauls

this entity surface form: Diocletianic reforms

Codex Gregorianus → era → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchic period

Codex Hermogenianus → historicalPeriod → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

province of Macedonia → reorganizedDuring → Diocletian's Tetrarchy ⓘ

this entity surface form: Diocletianic reforms

Diocese of the Britains → establishedInPeriod → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Imperial palace of Trier → associatedWith → Diocletian's Tetrarchy ⓘ

subject surface form: Imperial Palace of Trier

this entity surface form: Tetrarchy

Britannia Prima → createdAsResultOf → Diocletian's Tetrarchy ⓘ

this entity surface form: Diocletianic reforms

Romula → associatedWith → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Galeria Valeria → timePeriod → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Rotunda of Galerius in Thessalonica → builtInPeriod → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Eutropia (mother of Constantius) → associatedWith → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Chlorus → memberOf → Diocletian's Tetrarchy ⓘ

subject surface form: Constantius Chlorus

this entity surface form: Tetrarchy

the Pale → associatedPeriod → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchic period of the Roman Empire

Arch of Galerius in Thessalonica → associatedWith → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Battle of Tzirallum → relatedTo → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy

Caesar of the Eastern Roman Empire → partOf → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy system

Caesar of the Eastern Roman Empire → introducedUnder → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy of Diocletian

Severus II → memberOf → Diocletian's Tetrarchy ⓘ

this entity surface form: Tetrarchy