Publius Licinius Egnatius Gallienus was Roman emperor with his father Valerian from 253 to 260 and alone from 260 to 268. He ruled during the Crisis of the Third Century that nearly caused the collapse of the empire. He won numerous military victories against usurpers and Germanic tribes, but was unable to prevent the secession of important provinces. His 15-year reign was the longest in half a century.
The 260s decade ran from January 1, 260, to December 31, 269.
Aurelian was a Roman emperor who reigned from 270 to 275 during the Crisis of the Third Century. As emperor, he won an unprecedented series of military victories which reunited the Roman Empire after it had nearly disintegrated under the pressure of barbarian invasions and internal revolts. Born in modest circumstances, most likely in Moesia Superior, he entered the Roman army in 235 and climbed up the ranks. He went on to lead the cavalry of the emperor Gallienus, until Gallienus' assassination in 268. Following that, Claudius Gothicus became emperor until his own death in 270. Claudius' brother Quintillus then ruled for three months, before Aurelian took the empire for himself.
Year 260 (CCLX) was a leap year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Saecularis and Donatus. The denomination 260 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Year 268 (CCLXVIII) was a leap year starting on Wednesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Paternus and Egnatius. The denomination 268 for this year has been used since the early medieval period when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Marcus Aurelius Claudius "Gothicus", also known as Claudius II, was Roman emperor from 268 to 270. During his reign he fought successfully against the Alemanni and decisively defeated the Goths at the Battle of Naissus. He died after succumbing to a "pestilence", possibly the Plague of Cyprian that had ravaged the provinces of the Empire.
The Battle of Naissus was the defeat of a Gothic coalition by the Roman Empire under Emperor Gallienus and the future Emperor Aurelian near Naissus. The events around the invasion and the battle are an important part of the history of the Crisis of the Third Century.
The Battle of Lake Benacus was fought along the banks of Lake Garda in northern Italy, which was known to the Romans as Benacus, in 268 or early 269 AD, between the army under the command of the Roman Emperor Claudius II and the Germanic tribes of the Alamanni and Juthungi.
The Gallic Empire or the Gallic Roman Empire are names used in modern historiography for a breakaway part of the Roman Empire that functioned de facto as a separate state from 260 to 274. It originated during the Crisis of the Third Century, when a series of Roman military leaders and aristocrats declared themselves emperors and took control of Gaul and adjacent provinces without attempting to conquer Italy or otherwise seize the central Roman administrative apparatus.
Marcus Cassianius Latinius Postumus was a Roman commander of Batavian origin, who ruled as emperor of the splinter state of the Roman Empire known to modern historians as the Gallic Empire. The Roman army in Gaul threw off its allegiance to Gallienus around the year 260, and Postumus assumed the title and powers of Emperor in the provinces of Gaul, Germania, Britannia, and Hispania. He ruled for the better part of ten years before he was murdered by his own troops.
Domitian II was a Roman soldier of the mid 3rd century who was acclaimed emperor, probably in northern Gaul in late 270 or early 271, and struck coins to advertise his elevation. It is now generally assumed that this man is to be equated with the Domitianus who is twice mentioned in the literary sources as a significant figure in the politics of the age, but on neither occasion as an outright contender for the Imperial throne.
Gaius Pius Esuvius Tetricus was the emperor of the Gallic Empire from 271 to 274 AD. He was originally the praeses (governor) of Gallia Aquitania and became emperor after the murder of Emperor Victorinus in 271, with the support of Victorinus's mother, Victoria. During his reign, he faced external pressure from Germanic raiders, who pillaged the eastern and northern parts of his empire, and the Roman Empire, from which the Gallic Empire had seceded. He also faced increasing internal pressure, which led him to declare his son, Tetricus II, caesar in 273 and possibly co-emperor in 274, although this is debated. The Roman emperor Aurelian invaded in 273 or 274, leading to the Battle of Châlons, at which Tetricus surrendered. Whether this capitulation was the result of a secret agreement between Tetricus and Aurelian or necessary after his defeat is debated. Aurelian spared Tetricus, and even made him a senator and corrector (governor) of Lucania et Bruttium. Tetricus died of natural causes a few years after 274.
Titus Fulvius Iunius Macrianus, also known as Macrianus Minor, was a Roman usurper. He was the son of Fulvius Macrianus, also known as Macrianus Major.
Titus Fulvius Junius Quietus was a Roman usurper against Roman Emperor Gallienus.
Balista or Ballista, also known in the sources with the name of "Callistus", was one of the Thirty Tyrants of the controversial Historia Augusta, and supported the rebellion of the Macriani against Emperor Gallienus.
Valens Thessalonicus was a Roman usurper during the reign of Emperor Gallienus.
The Gallienus usurpers were the usurpers who claimed imperial power during the reign of Gallienus. The existence of usurpers during the Crisis of the Third Century was very common, and the high number of usurpers fought by Gallienus is due to his long rule; fifteen years being considered long by the standards of the 3rd century Roman Empire.
The Battle of Mediolanum took place in 259, between the Alemanni and the Roman legions under the command of Emperor Gallienus.
Marcus(?) Aurelius Heraclianus was a Roman soldier who rose to the rank of Praetorian Prefect in the latter part of the reign of the Emperor Gallienus. He was a member of the cabal of senior commanders of the Imperial field army that plotted and achieved the assassination of the Emperor Gallienus. His subsequent fate is uncertain. The only ancient reference has him committing suicide, but the circumstances are unclear.
The Geopolitics of the Roman Empire deals with the "inalienable relationship between geography and politics of the Roman Empire". Once the Roman Empire had reached its natural borders, the location of potential threats to the empire and Roman troop locations played a major role in the elevation of Roman Emperors. Access to the troops, their location were crucial to the empire's internal politics, civil wars, and the eventual Fall of the Western Roman Empire.
