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Constantius Chlorus

Roman emperor (250-306)

15 dated entries naming Constantius Chlorus, drawn from 13 separate years between 250 CE and 337 CE. Nothing here is written by us: each line is the sentence a Wikipedia year article used, and the link beside it opens the exact revision.

Also written as Constantius I in the source articles; Wikipedia redirects those to the same subject, so their entries are on this page.

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3rd century

  • 250March 31 – Constantius Chlorus, Roman emperor (d. 306)source
  • 286Emperor Diocletian campaigns successfully against Sarmatian raids. The future emperor Constantius defeats the 'Bosporian Sarmatians'.source
  • 287Around this time, the future emperor Constantius defeats and captures a Germanic king, the latter having prepared an ambush against the Romans.source
  • 288Around this time, an army loyal to Maximian, probably led by the future emperor Constantius, defeats the usurper Carausius or his Frankish allies in northern Gaul. In this or the following year, Carausius withdraws his military forces and administrative presence from Gaul, confining himself to Roman Britain.source
  • 293March 1 – Emperors Diocletian and Maximian appoint Constantius I and Galerius as Caesars. This is considered the beginning of the Tetrarchy, known as the Quattuor Principes Mundi ("Four Rulers of the World"). (Some sources and scholars date Galerius' elevation to May 21.)source
  • 296In this or the previous year, Caesar Constantius I assembles two invasion fleets with the intent of overthrowing the usurper Allectus, who is based in Britain. The first is under the command of Asclepiodotus, Maximian's long-serving Praetorian Prefect. Asclepiodotus sails from the mouth of the Seine, and lands near the Isle of Wight, where his forces defeat Allectus in Hampshire. Allectus is killed in the fighting. Constantius leaves Boulogne with his fleet, and occupies London, where he slaughters some of Allectus' Frankish mercenaries. With this victory, the Romano-British regime first established by Carausius is overthrown, and Britain is re-incorporated into the rest of the empire.source
  • 300Caesar Constantius I wins a victory over the Franks (approximate date).source

4th century

  • 302An invasion of Gaul by the Alemannic Lingones almost traps Caesar Constantius I between the enemy and the walls of a town. Constantius himself is carried onto the wall via a crane. However, within the same day, Constantius sallies forth from the walls and defeats the enemy in a major battle.source
  • 303Caesar Constantius I wins a victory over Germanic invaders in the battle of Vindonissa.source
  • 304Caesar Constantius I besieges a Germanic raiding force on an island in the Rhine and forces their surrender.source
  • 305Constantius I and Galerius are declared Augusti; Flavius Valerius Severus and Maximinus Daza are appointed Caesars.source
  • 306July 25 – Constantius I dies outside Eboracum (modern-day York). Constantine, aged 23 or 24, is declared emperor by his troops. Emperor Galerius grants Constantine the title of Caesar, and elevates Flavius Valerius Severus to emperor in the Western part of the Roman Empire.source
  • 306July 25 – Constantius Chlorus, Roman emperor (b. c. 250)source
  • 337A number of descendants of Constantius Chlorus, and officials of the Roman Empire, are executed in a purge.source
  • 337Julius Constantius, son of Constantius Chlorus (executed)source

Named in the same entries