Constans II (son of Constantine III)

Constans II
Constans II
Roman emperor
Augustus Caesar	c. 409–411 c. 407–409
Predecessor	Honorius and Constantine III
Successor	Honorius and Constantine III
Co-emperors	Constantine III Honorius
Died	411 Vienne
Father	Constantine III
Religion	Nicene Christianity

Constans II (died 411) was the son of the Western Roman emperor Constantine III, and served as his co-emperor from 409 to 411. When his father rebelled against the ruling emperor Honorius and the army in Britain acclaimed him as emperor by in early 407, Constans was a monk. He was summoned to Gaul, appointed to the position of caesar (heir) and swiftly married so that a dynasty could be founded. In Hispania, Honorius's relatives took up arms in 408 and expelled Constantine's administration. An army under Constans and the general Gerontius was sent to deal with this and re-established Constantine's authority.

Honorius acknowledged Constantine as co-emperor in early 409 and Constantine immediately raised Constans to the position of augustus (emperor), theoretically equal in rank to Honorius as well as to Constantine. Later in 409 Gerontius rebelled, proclaimed his client Maximus emperor and incited barbarian groups which had recently invaded Gaul to rise up. Constans was sent to Hispania to quash the revolt, but suffered a defeat and withdrew to Arelate (modern Arles). In 410, Constans was sent to Hispania with another army. Gerontius had strengthened his forces with barbarians and won a battle against Constans; the latter withdrew north and was defeated again and killed at Vienne early in 411. Gerontius then besieged Constantine in Arelate and killed him.