Ingenuus was a

Roman Roman or Romans most often refers to: *Rome, the capital city of Italy *Ancient Rome, Roman civilization from 8th century BC to 5th century AD *Roman people, the people of Roman civilization *Epistle to the Romans, shortened to Romans, a letter w ...

military commander, the imperial legate in

Pannonia Pannonia (, ) was a Roman province, province of the Roman Empire bounded on the north and east by the Danube, on the west by Noricum and upper Roman Italy, Italy, and on the southward by Dalmatia (Roman province), Dalmatia and upper Moesia. It ...

, who became a

usurper A usurper is an illegitimate or controversial claimant to power, often but not always in a monarchy. In other words, one who takes the power of a country, city, or established region for oneself, without any formal or legal right to claim it a ...

to the throne of the

emperor The word ''emperor'' (from , via ) can mean the male ruler of an empire. ''Empress'', the female equivalent, may indicate an emperor's wife (empress consort), mother/grandmother (empress dowager/grand empress dowager), or a woman who rules ...

Gallienus Publius Licinius Egnatius Gallienus (; – September 268) 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 ...

when he led a brief and unsuccessful revolt in the year 260. Appointed by Gallienus himself, Ingenuus served him well by repulsing a

Sarmatian The Sarmatians (; ; Latin: ) were a large confederation of Ancient Iranian peoples, ancient Iranian Eurasian nomads, equestrian nomadic peoples who dominated the Pontic–Caspian steppe, Pontic steppe from about the 5th century BCE to the 4t ...

invasion and securing the Pannonian border, at least temporarily. Ingenuus had also been charged with the military education of ''Caesar'' Cornelius Licinius Valerianus, the young son of Emperor

, but after the boy's death in 258, his position became perilous. A well-liked and admired commander, Ingenuus found an opportunity to become the Roman Emperor when Valerian was captured and killed by

Shapur I Shapur I (also spelled Shabuhr I; ) was the second Sasanian Empire, Sasanian King of Kings of Iran. The precise dating of his reign is disputed, but it is generally agreed that he ruled from 240 to 270, with his father Ardashir I as co-regent u ...

of the

Sassanid Empire The Sasanian Empire (), officially Eranshahr ( , "Empire of the Iranians"), was an Iranian empire that was founded and ruled by the House of Sasan from 224 to 651. Enduring for over four centuries, the length of the Sasanian dynasty's reign ...

. Throwing off their allegiance to Valerian's son, the legions of

Moesia Moesia (; Latin: ''Moesia''; ) was an ancient region and later Roman province situated in the Balkans south of the Danube River. As a Roman domain Moesia was administered at first by the governor of Noricum as 'Civitates of Moesia and Triballi ...

proclaimed Ingenuus

Emperor The word ''emperor'' (from , via ) can mean the male ruler of an empire. ''Empress'', the female equivalent, may indicate an emperor's wife (empress consort), mother/grandmother (empress dowager/grand empress dowager), or a woman who rules ...

Sirmium Sirmium was a city in the Roman province of Pannonia, located on the Sava river, on the site of modern Sremska Mitrovica in the Vojvodina autonomous province of Serbia. First mentioned in the 4th century BC and originally inhabited by Illyrians ...

in 260. Gallienus was in

Germania Germania ( ; ), also more specifically called Magna Germania (English: ''Great Germania''), Germania Libera (English: ''Free Germania''), or Germanic Barbaricum to distinguish it from the Roman provinces of Germania Inferior and Germania Superio ...

on the

Rhine The Rhine ( ) is one of the List of rivers of Europe, major rivers in Europe. The river begins in the Swiss canton of Graubünden in the southeastern Swiss Alps. It forms part of the Swiss-Liechtenstein border, then part of the Austria–Swit ...

frontier, so he acted quickly by recalling troops from

Gaul Gaul () was a region of Western Europe first clearly described by the Roman people, Romans, encompassing present-day France, Belgium, Luxembourg, and parts of Switzerland, the Netherlands, Germany, and Northern Italy. It covered an area of . Ac ...

and after a rapid march he met Ingenuus on the

battlefield A battlefield, battleground, or field of battle is the location of a present or historic battle involving ground warfare. It is commonly understood to be limited to the point of contact between opposing forces, though battles may involve troop ...

Mursa Osijek () is the List of cities and towns in Croatia, fourth-largest city in Croatia, with a population of 96,848 in 2021. It is the largest city and the economic and cultural centre of the eastern Croatian region of Slavonia, as well as the adm ...

. The troops of Ingenuus were defeated, as Gallienus' general,

Aureolus Aureolus was a Roman military commander during the reign of Emperor Gallienus before he attempted to usurp the Roman Empire. After turning against Gallienus, Aureolus was killed during the political turmoil that surrounded the Emperor's assass ...

, used to great effect the advantage given by the mobility of an improved cavalry component of the army, which was the remarkable military innovation wanted by the Emperor. Ingenuus died after the battle by drowning himself in a nearby river to avoid capture. ''

Historia Augusta The ''Historia Augusta'' (English: ''Augustan History'') is a late Roman collection of biographies, written in Latin, of the Roman emperors, their junior colleagues, Caesar (title), designated heirs and Roman usurper, usurpers from 117 to 284. S ...

'', Tyranni Triginta 9.4

Notes

References

* * * {{Roman Emperors Gallienus usurpers Thirty Tyrants (Roman) 260 deaths Year of birth unknown Ancient Romans from unknown gentes People from Sirmium Suicides in Ancient Rome Suicides by drowning