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Constantius I

10 dated entries naming Constantius I, drawn from 10 separate years between 286 CE and 306 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.

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3rd century

  • 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
  • 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

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