Constantius Chlorus

Constantius Chlorus, as Caesar under Maximian, led a campaign to recover Britain from the usurper Allectus. His forces landed near London and defeated Allectus's troops, restoring Roman control over the province.

Following the abdication of Diocletian and Maximian, Constantius Chlorus became the senior Augustus of the Western Roman Empire. He ruled jointly with Galerius in the East, continuing the Tetrarchy system.

Constantius Chlorus died in Eboracum (modern York) while preparing a campaign against the Picts. His death led to the acclamation of his son Constantine as emperor by the troops, a pivotal moment in Roman history.