The Byzantine Empire

In the year 324, the Roman Emperor Constantine I, the Great, started work on a new capital for his empire. The empire had been divided in two previously by Diocletian in 286. Constantine ruled over both halves, East and West, but was acutely aware of the steady decline of the West, in terms of the economy and military security. Accordingly, he settled on the town of Byzantium for his new capital, situated as it was in an excellent strategic position at the heart of the Eastern empire. The work on the new capital was completed in 330, and the city was dedicated and renamed Constantinopolis, in honour of its founder.

Constantinople was to remain capital of the Eastern Roman Empire for more than 1100 years after its dedication. The term "Byzantine" Empire recalls the original name of the capital founded by Constantine. Different dates can be assigned to the actual beginning of the Byzantine Empire. Some would place it in 286 when Diocletian originally split the empire. Others would argue for the dedication of Constantinople in 330 whilst yet others would say that it began in 476 with the fall of Rome and final disintegration of the Western Empire. Numismatically speaking, the division came when the emperor Anastasius I reformed the coinage completely in 498. Previously, the old Roman system had remained in use, but the reform produced a completely new set of coins, and instigated the distinctive Byzantine series. The 498 date is used here, as this is principally a numismatic site.

Multiple occupancy of the imperial throne was common during some periods of the Byzantine Empire. By convention, only the senior Emperor receives a regnal number. So whilst there are eleven numbered Constantines, there are a further five emperors called Constantine who were never the senior emperor. To confuse matters further, some regnal numbers are reused from the Roman series. So there are two Constantine IIIs and two Constans IIs. Even more confusingly, the Byzantine contenders for Constantine III and Constans II are the same man. Usually known as Constans II Pogonatus, this emperor's official name (and that inscribed on his coinage) was actually Constantine.

The Emperors

Name

Accession

End of Reign

Coins

Anastasius I

491

518

2

Justin I

518

527

4

Justinian I

527

565

6

Justin II

565

578

4

Tiberius II Constantine

578

582

1

Maurice Tiberius

582

602

5

Theodosius

590

602

 

Phocas

602

610

4

Heraclius

610

641

2

Heraclius Constantine

613

641

 

Heraclonas

638

641

 

Constans II Pogonatus

641

668

1

Constantine IV

654

685

 

Heraclius

659

681

 

Tiberius

659

681

 

Mezezius

668

668

 

Justinian II (first reign)

685

695

 

Leontius

695

698

 

Tiberius III Apsimar

698

705

 

Justinian II (second reign)

705

711

 

Tiberius

705

711

 

Phillippicus Bardanes

711

713

 

Anastasius II Artemius

713

715

 

Theodosius III

715

717

 

Leo III the Isaurian

717

741

 

Constantine V Copronymus (first reign)

720

742

 

Artabasdus

742

743

 

Nicephorus

742

742

 

Constantine V (second reign)

743

775

 

Leo IV the Khazar

751

780

 

Constantine VI

776

797

 

Irene (first reign)

780

790

 

Irene (second reign)

792

802

 

Nicephorus I

802

811

 

Stauracius

803

811

 

Michael I Rhangabe

811

813

 

Theophylactus

811

813

 

Leo V the Armenian

813

820

1

Constantine

813

820

 

Michael II the Amorian

820

829

 

Theophilus

821

842

1

Constantine

830

830

 

Michael III the Drunkard

840

867

 

Basil I the Macedonian

866

886

 

Constantine

868

879

 

Leo VI the Wise

870

912

1

Alexander

879

913

 

Constantine VII Porphyrogenitus

908

959

 

Zoe

914

919

 

Romanus I Lecapenus

920

944

 

Christopher

921

931

 

Stephen

924

945

 

Constantine

925

945

 

Romanus II

945

963

 

Basil II Bulgaroctonus

960

1025

 

Constantine VIII

961

1028

 

Nicephorus II Phocas

963

969

 

John I Tzimisces

969

976

1

Romanus III Argyrus

1028

1034

1

Michael IV

1034

1041

 

Zoe (first reign)

1041

1041

 

Michael V Calaphates

1041

1041

 

Zoe (second reign)

1042

1042

 

Theodora (first reign)

1042

1042

 

Constantine IX

1042

1055

1

Theodora (second reign)

1055

1056

 

Michael VI Stratioticus

1056

1057

 

Isaac I Comnenus

1057

1059

 

Constantine X Ducas

1059

1067

3

Eudocia (first reign)

1067

1068

 

Michael VII Ducas

1067

1078

 

Constantius

1067

1071

 

Romanus IV Diogenes

1068

1071

1

Andronicus

1068

1071

 

Eudocia (second reign)

1071

1071

 

Nicephorus III Botaneiates

1078

1081

1

Nicephorus Basiliacius

1078

1078

 

Nicephorus Melissenus

1080

1080

 

Alexius I Comnenus

1081

1118

 

John II Comnenus

1092

1143

 

Manuel I Comnenus

1153

1180

5

Alexius II Comnenus

1180

1183

 

Andronicus I Comnenus

1183

1185

1

Isaac Comnenus

1184

1191

 

Isaac II Angelus (first reign)

1185

1195

2

Alexius III Angelus-Comnenus

1195

1203

1

Isaac II (second reign)

1203

1203

 

Alexius IV Angelus

1203

1204

 

Alexius V Ducas

1204

1204

 

In 1204, Constantinople fell to the forces of the crusades. The Byzantine aristocracy went into exile and founded small empires in opposition to the Latin rulers in their captured capital. The Empire of Nicaea eventually overcame the Latin emperors and Constantinople was regained in 1261.

The Latin Rulers in Constantinople

Baudoin I

1204

1205

 

Henri

1205

1216

 

Pierre de Courtney

1216

1217

 

Yolande

1217

1219

 

Interregnum

1219

1221

 

Robert de Courtney

1221

1228

 

Baudoin II de Courtney

1228

1261

 

The Empire of Nicaea

Theodore I Comnenus-Lascaris

1208

1222

 

John III Ducas-Vatatzes

1222

1254

 

Theodore II Ducas-Lascaris

1254

1258

 

Michael VIII Palaeologus

1258

1261

 

The Empire of Thessalonica

Theodore Comnenus-Ducas

1224

1230

 

Manuel Comnenus-Ducas

1230

1237

 

John Comnenus-Ducas

1237

1244

5

The Despotate of Epirus

Michael I Angelus

1204

1215

 

Theodore Comnenus-Ducas (was also Theodore of Thessalonica)

1215

1230

 

Manuel Comnenus-Ducas (was also Manuel of Thessalonica)

1230

1237

 

Michael II Angelus

1237

1271

 

The Byzantine Empire Restored

Michael VIII Palaeologus

1261

1282

1

Andronicus II Palaeologus

1272

1328

 

Michael IX

1295

1320

 

Andronicus III Palaeologus

1325

1341

1

John V Palaeologus (first reign)

1341

1376

 

John VI

1354

1354

 

Matthew Cantacuzenus

1354

1354

 

Manuel II Palaeologus (first reign)

1373

1376

 

Andronicus IV Palaeologus

1376

1390

 

John VII Palaeologus (first reign)

1390

1390

 

John V (second reign)

1390

1391

 

Manuel II (second reign)

1391

1423

 

John VII (second reign)

1399

1402

 

John VIII Palaeologus

1421

1448

 

Constantine XI

1448

1453