Constantius III

Roman emperor in 421

Not to be confused with Constantine III (Western Roman emperor).

Constantius III

Consular diptych of Constantius III

Roman emperor in the West
Reign| 8 February – 2 September 421 (with Honorius)

Born| Constantius
Naissus, Moesia
Died| 2 September 421
Ravenna, Italia
Spouse| Galla Placidia
Issue|

* Justa Grata Honoria
* Valentinian III

| Regnal name

Imperator Caesar Flavius Constantius Augustus
Dynasty| Theodosian and Valentinian

Constantius III (died 2 September 421) was briefly Western Roman emperor in 421, having earned the throne through his capability as a general under Honorius. By 411 he had achieved the rank of magister militum, and in the same year he suppressed the revolt of the usurper Constantine III. Constantius went on to lead campaigns against various barbarian groups in Hispania and Gaul, recovering much of both for the Western Roman Empire. He married Honorius's sister Galla Placidia in 417, a sign of his ascendant status, and was proclaimed co-emperor by Honorius on 8 February 421. Constantius reigned for seven months before dying on 2 September 421.

## Life

[edit]

### Early life

[edit]

Solidus of Constantius III

Constantius was born in Naissus, Moesia, (present-day Niš, Serbia) of Illyrian origin.[1][2][3][4][5] Constantius served as a general under Honorius, rising to the rank of Magister militum (Master of the Soldiers) by 411.[5]

### Revolt of Constantine III

[edit]

In 411 Constantius was sent by Honorius to put down the revolt of Constantine III, who had declared himself emperor in Britain in 407.[6] Constantius thereafter led his soldiers to Arles, the capital and residence of Constantine. Upon arriving, he defeated the army of Gerontius, a general who was rebelling against Constantine, before besieging the city.[6]

Constantine refused to surrender, hoping to last until the return of his general Edobichus, who was raising troops in northern Gaul.[7] When Edobichus did return to Arles, he was swiftly defeated by Constantius.[8] Constantine soon after lost much of the remainder of his forces, as his army which had been guarding the Rhine chose to support the usurper Jovinus instead, forcing Constantine to surrender. Despite Constantius's assurances that Constantine would be able to safely retire to a clerical office, Constantius had him imprisoned, and further had him beheaded during his return to Ravenna, in either August or September 411.[6] Honorius's remaining rivals were soon defeated, with Gerontius committing suicide in Hispania,[9] and Jovinus being defeated by Athaulf, king of the Visigoths.[8] Despite this, Honorius was unable to regain control of Britain, nor was any Roman after him.[10]

### The war against Heraclianus

[edit]

Main article: War of Heraclianus

The appointment of Constantius as commander-in-chief led to a war in 412 with the rival general Heraclianus, who, like Constantius, had done good services for Emperor Honorius. Heraclianus revolted, appointed himself emperor and stopped grain supplies to Italy. At the beginning of March 413, the usurper landed in Italy near Rome with an army to go to war against Honorius. He engaged in a battle with Constantius's Roman army, but was defeated. After his defeat, Heraclianus fled. He was captured and murdered.[11]

### Campaigns

[edit]

Main article: Gothic War in Spain (416-418)

Constantius initiated a campaign against the Visigoths in northern Hispania in 416, blockading them in order to starve them and force their submission. Soon after, the Visigoth king, Wallia, surrendered to Rome, agreeing to return Galla Placidia (the half sister of Honorius, who had been captured by Alaric c. 410, and been forced into marriage with Athaulf, who was by this time dead), and to wage war against the Vandals and other barbarians who the Romans were still in conflict with, in exchange for food supplies.[12] This development enabled Constantius to put an end to the Bagaudae revolt in northwestern Gaul in 417.[13] He then continued his campaign against various tribal groups and regained control of much of Hispania and Gaul by 420.[14]

### Reign

[edit]

During this time period, generals played a critical role in ensuring the continued reign of Roman Emperors, especially Western Roman Emperors.[15] Constantius's position of magister militum and his skill as a commander allowed him to gain huge influence over the Western Roman Empire, comparable to the earlier Stilicho.[5] For this reason, Honorius bestowed many honors upon Constantius,[15] such as appointing him consul three times: in 414, alongside Constans; in 417, alongside Honorius;[4][16] and in 420, alongside Theodosius II.[4][17] In order to further ensure Constantius's loyalty, Honorius arranged the betrothal of his half sister, Galla Placidia, to Constantius in 417.[4] Later, on 8 February 421, Honorius made Constantius co-Western Emperor under himself. However, his cousin Theodosius II, emperor of the Eastern Empire, did not recognize him as such. Reportedly, Constantius was angry about this and considered starting a campaign against Theodosius.

### Death

[edit]

In the end, none of that came to fruition, because Constantius' health deteriorated rapidly and he died after less than 7 months as emperor on 2 September 421.[4][18] According to Syvänne, Constantius was killed by poisoning. As source, he cites Theophanes (AM 5913) who states that Constantius was murdered. Castinus, a confidant of Emperor Honorius, who after Constantius' death obtained the rank of commander-in-chief, is said to have had the hand in this.[19] After his death, his wife fled with her children to Constantinople. Honorius only continued to reign until his death in 423, when Valentinian III, the minor son of Constantius, succeeded him, with Galla Placidia as regent.[20]

## References

[edit]

1. ^ Cyril Dean Darlington (1971). The Evolution of Man and Society. Simon and Schuster. p. 318\. ISBN 9780671210649.
2. ^ Christof Schuler; Rudolf Haensch; Simone Killen (2021). 2021. Walter de Gruyter GmbH & Co KG. p. 272\. ISBN 9783110742770.
3. ^ Brian Croke; Ammien Marcellin (2001). Count Marcellinus and His Chronicle. Oxford University Press. p. 75\. ISBN 978-0-19-815001-5.
4. ^ a b c d e Grant 2015, p. 60.
5. ^ a b c Adkins & Adkins 2014, p. 36.
6. ^ a b c Jones 1992, p. 316.
7. ^ Bury 1889, p. 143.
8. ^ a b Bury 1889, p. 144.
9. ^ Jones 1992, p. 508.
10. ^ Birley 1980, p. 160.
11. ^ Smith 1870, p. 402.
12. ^ Lee 2013, p. 115.
13. ^ Thompson 1982, pp. 23–37.
14. ^ Sivan 2011, p. 171.
15. ^ a b Lee 2013, p. 82.
16. ^ Cooley 2012, p. 482.
17. ^ Cooley 2012, p. 483.
18. ^ Cooley 2012, p. 506.
19. ^ Syvänne 2020, p. 186.
20. ^ Ring, Watson & Schellinger 2013, p. 554.

### Bibliography

[edit]

* Adkins, Lesley; Adkins, Roy A. (2014). Handbook to Life in Ancient Rome. Facts On File. ISBN 9780816074822.
* Birley, Anthony (1980). The People of Roman Britain. University of California Press. ISBN 9780520041196.
* Bury, J. B. (1889). A History of the Later Roman Empire, from Arcadius to Irene (395 A.D. to 800 A.D.). Macmillan and co. OCLC 933179049.
* Cooley, Alison E. (2012). The Cambridge Manual of Latin Epigraphy. Cambridge University Press. ISBN 9781139576604.
* Grant, Michael (2015). From Rome to Byzantium: The Fifth Century AD. Routledge. ISBN 9781135166724.
* Jones, A. H. M. (1992). The Prosopography of the Later Roman Empire: Volume 2, AD 395–527. Cambridge University Press. ISBN 9780521201599.
* Lee, A. D. (2013). From Rome to Byzantium AD 363 to 565. Edinburgh University Press. ISBN 9780748668359.
* Ring, Trudy; Watson, Noelle; Schellinger, Paul (2013). Southern Europe: International Dictionary of Historic Places. Taylor and Francis. ISBN 9781134259656.
* Sivan, Hagith (2011). Galla Placidia: The Last Roman Empress. Oxford University Press. ISBN 9780195379129.
* Smith, William (1870). Dictionary of Greek and Roman Biography and Mythology. Vol. 2\. Boston: C. Little and J. Brown.
* Syvänne, Ilkka (2020). Military History of Late Rome 425–457. Pen & Sword Military. ISBN 978-1-4738-7217-2.
* Thompson, E. A. (1982). Romans and Barbarians. Madison: University of Wisconsin Press.

Political offices

Preceded by

Heraclianus
Lucius

|  Roman consul
414
With:  Constans | Succeeded by

Honorius
Theodosius II

Preceded by

Theodosius II
Junius Quartus Palladius

|  Roman consul II
417
With:  Honorius | Succeeded by

Honorius
Theodosius II

Preceded by

Monaxius
Plinta

|  Roman consul III
420
With:  Theodosius II | Succeeded by

Agricola
Eustathius

Military offices
Preceded by

Stilicho
In 408

|  Magister militum of the Western Roman Army
411–421  | Succeeded by

Castinus
In 422

* v
* t
* e

Roman and Byzantine emperors and empresses regnant

Principate
27 BC – AD 235|

* Augustus
* Tiberius
* Caligula
* Claudius
* Nero
* Galba
* Otho
* Vitellius
* Vespasian
* Titus
* Domitian
* Nerva
* Trajan
* Hadrian
* Antoninus Pius
* Marcus Aurelius
* Lucius Verus
* Commodus
* Pertinax
* Didius Julianus
* Septimius Severus
* Caracalla
* Geta
* Macrinus (w. Diadumenian)
* Elagabalus
* Severus Alexander

Crisis
235–284|

* Maximinus I
* Gordian I
* Gordian II
* Pupienus
* Balbinus
* Gordian III
* Philip I (w. Philip II)
* Decius (w. Herennius Etruscus)
* Trebonianus Gallus (w. Hostilian & Volusianus)
* Aemilianus
* Silbannacus (?)
* Valerian
* Gallienus (w. Saloninus)
* Claudius II
* Quintillus
* Aurelian
* Tacitus
* Florianus
* Probus
* Carus
* Carinus
* Numerian

Later Roman Empire
284–641|

* Diocletian
* Maximian
* Galerius
* Constantius I
* Severus II
* Constantine I
* Maxentius
* Licinius
* Maximinus II
* Valerius Valens
* Martinian
* Constantine II
* Constantius II
* Constans I
* Magnentius
* Nepotianus
* Vetranio
* Julian
* Jovian
* Valentinian I
* Valens
* Procopius
* Gratian
* Theodosius I
* Valentinian II
* Magnus Maximus (w. Victor)
* Eugenius

| Western Empire
395–476|

* Honorius
* Constantine III (w. Constans II)
* Priscus Attalus
* Constantius III
* Joannes
* Valentinian III
* Petronius Maximus
* Avitus
* Majorian
* Severus III
* Anthemius
* Olybrius
* Glycerius
* Julius Nepos
* Romulus Augustulus

|

Eastern Empire
395–641|

* Arcadius
* Theodosius II
* Marcian
* Leo I
* Leo II
* Zeno
* Basiliscus (w. Marcus)
* Anastasius I
* Justin I
* Justinian I
* Justin II
* Tiberius II Constantine
* Maurice (w. Theodosius)
* Phocas
* Heraclius

Eastern/
Byzantine Empire
641–1453|

* Constantine III
* Heraclonas (w. Tiberius)
* Constans II
* Constantine IV (w. Heraclius & Tiberius)
* Justinian II
* Leontius
* Tiberius III
* Justinian II (w. Tiberius)
* Philippicus
* Anastasius II
* Theodosius III
* Leo III
* Constantine V
* Artabasdos (w. Nikephoros)
* Leo IV
* Constantine VI
* Irene
* Nikephoros I
* Staurakios
* Michael I Rangabe (w. Theophylact & Staurakios)
* Leo V (w. Constantine)
* Michael II
* Theophilos (w. Constantine)
* Michael III (w. Thekla)
* Basil I (w. Constantine)
* Leo VI
* Alexander
* Constantine VII
* Romanos I Lekapenos (w. Christopher, Romanos (?), Stephen & Constantine Lekapenos)
* Romanos II
* Nikephoros II Phokas
* John I Tzimiskes
* Basil II
* Constantine VIII
* Zoe
* Romanos III Argyros
* Michael IV
* Michael V
* Constantine IX Monomachos
* Theodora
* Michael VI Bringas
* Isaac I Komnenos
* Constantine X Doukas
* Eudokia Makrembolitissa
* Romanos IV Diogenes (w. Leo & Nikephoros)
* Michael VII Doukas (w. Andronikos, Konstantios & Constantine Doukas)
* Nikephoros III Botaneiates
* Alexios I Komnenos (w. Constantine Doukas)
* John II Komnenos (w. Alexios)
* Manuel I Komnenos
* Alexios II Komnenos
* Andronikos I Komnenos (w. John)
* Isaac II Angelos
* Alexios III Angelos
* Alexios IV Angelos
* Alexios V Doukas
* Theodore I Laskaris (w. Nicholas)
* John III Vatatzes
* Theodore II Laskaris
* John IV Laskaris
* Michael VIII Palaiologos
* Andronikos II Palaiologos (w. Irene)
* Michael IX Palaiologos
* Andronikos III Palaiologos
* John V Palaiologos (w. Anna)
* John VI Kantakouzenos (w. Matthew)
* Andronikos IV Palaiologos
* John VII Palaiologos (w. Andronikos V)
* Manuel II Palaiologos
* John VIII Palaiologos
* Constantine XI Palaiologos

See also|

* Gallic emperors (260–274)
* Palmyrene emperors (271–273)
* Britannic emperors (286–296)
* Trapezuntine emperors (1204–1461)
* Thessalonian emperors (1224–1242)
* Empresses
* Augustae
* Usurpers
* Classical
* Eastern

Italics indicates a junior co-emperor, underlining indicates an emperor variously regarded as either legitimate or a usurper

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Other|

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