Civilis is all that is known of the name of a vicarius

Vicarius

Vicarius is a Latin word, meaning substitute or deputy. It is the root and origin of the English word "vicar" and cognate to the Persian word most familiar in the variant vizier....

 of Roman Britain

Roman Britain

Roman Britain was the part of the island of Great Britain controlled by the Roman Empire from AD 43 until ca. AD 410.The Romans referred to the imperial province as Britannia, which eventually comprised all of the island of Great Britain south of the fluid frontier with Caledonia...

 around AD 368

368

Year 368 was a leap year starting on Tuesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus and Valens...

. Dulcitius

Dulcitius

Dulcitius was a Dux Britanniarum, a military leader in Roman Britain in the later fourth century AD. He is praised by Ammianus for his military abilities....

 was appointed Dux Britanniarum

Dux Britanniarum

Dux Britanniarum was a military post in Roman Britain, probably created by Diocletian or Constantine I during the late third or early fourth century....

 at the same time under Count Theodosius

Count Theodosius

Flavius Theodosius or Theodosius the Elder was a senior military officer serving in the Western Roman Empire. He achieved the rank of Comes Britanniarum and as such, he is usually referred to as Comes Theodosius...

' reforms.

Under Civilis' rule the last of the earlier invaders were driven out, possibly using troops under his own personal command, and a programme of civil restoration begun. The latter was probably Civilis' main responsibility.