Constantius I Chlorus, as Caesar
Cyzicus 293-305 CE
Æ Radiatus 20mm, 2,89g
250 CE
March 31

Birth of Constantius Chlorus on Moesia Superior.

272 CE
February 27

Birth of Constantine the Great in Moesia Superior to Constantius Chlorus and Helena.

288 CE

Constantius Chlorus made a praetorian prefect in the West under Maximian.

293 CE

Constantius Chlorus divorces Helena to marry Theodora.

293 CE
March 1

Maximian promotes Constantius Chlorus to Caesar with the approval of Diocletian.

293 CE
November

Constantius Chlorus defeats the forces of Carausius, who had declared himself emperor in Gaul.

294 CE

Birth of son Julius Constantius to Theodora and Constantius Chlorus.

295 CE

Constantius Chlorus achieves several victories over the Alamanni.

298 CE

Constantius Chlorus defeats the Alemanni at the Battle of Lingones.

300 CE

Constantius Chlorus fights against the Franks on the Rhein frontier.

305 CE
May 1

Diocletian announces his resignation. Maximian follows suit. Constantius and Galerius are promoted to Augusti, while Severus II and Maximinus are appointed Caesars.

305 CE
June

Constantius requests his son Constantine I join him in Britain. Galerius grants the request after drinking heavily.

306 CE
January 7

Constantius Chlorus defeats the Picts in battle, earning the title of Britannicus.

306 CE
July 25

Death of Constantius Chlorus in Britain. Constantine the Great is declared Augustus by his troops.