Theodosius I

Anyone asking who was Theodosius I should begin far from Rome, in the Spanish provinces. He was born on January 11, 347 CE at Cauca, the modern town of Coca in Hispania, into a family of provincial landowners with strong military connections ^[1]. His father, known to historians as Count Theodosius, became one of the most successful generals of the emperor Valentinian I, restoring order in Britain after the barbarian assaults of 367 and suppressing the revolt of Firmus in North Africa ^[2].

The younger Theodosius grew up between the family estates in Spain and the camps of the field army. He received the practical education of an officer's son: Latin letters, some rhetoric, and above all soldiering under his father's eye. Sources for his youth are thin, and much of what circulated later was shaped by court panegyric, so historians treat the flattering anecdotes with caution ^[3].

His background mattered for the rest of his career. He was a westerner, a Latin speaker, and a Nicene Christian from a region where that creed faced little competition. When he later legislated on religion for the Greek East, he did so as an outsider to its long doctrinal quarrels ^[4].

Theodosius earned his first independent command as military governor (dux) of Moesia Prima on the Danube around 374, where he campaigned against the Sarmatians with credit ^[2]. His rise then stopped abruptly. In 375 or 376 his father was arrested and executed at Carthage in circumstances that remain obscure, apparently a casualty of court politics after the death of Valentinian I ^[3]. The son withdrew to the family lands in Spain, married, and for a short time seemed finished as a public figure.

Catastrophe on the Danube revived his fortunes. In August 378 the eastern emperor Valens was killed with much of his army by Gothic forces at Adrianople, one of the worst Roman defeats in centuries ^[5]. The surviving emperor, Gratian, needed an experienced commander to take charge of the shattered East. He recalled Theodosius, gave him a command against the Sarmatians, and after a victory proclaimed him Augustus at Sirmium on January 19, 379 ^[1].

The new emperor inherited an army gutted of veterans and a Balkan countryside overrun by Gothic war bands. His first years were spent rebuilding regiments, conscripting farmers and even barbarian recruits, and fighting a grinding war of containment rather than seeking another pitched battle ^[5].

The central problem of the reign was the Gothic one, and the solution Theodosius reached in October 382 counts among the most debated of all Theodosius I achievements. Unable to destroy the Goths and unwilling to fight indefinitely, he concluded a treaty that settled them on Roman soil in Thrace as allied peoples, or foederati. They kept their own leaders and customs and owed military service to the empire, but they were not dispersed among the provinces as defeated enemies traditionally were ^[5].

Contemporaries disagreed sharply about the deal. Court orators praised the emperor's clemency and statesmanship, while critics saw a dangerous concession that left an armed, semi-independent nation inside the frontier. Modern historians still argue over whether the settlement was pragmatic necessity or the first step toward the Gothic kingdoms of the following century ^[6].

On the eastern frontier Theodosius chose diplomacy as well. Around 384 to 387 he reached an understanding with Persia that partitioned the long-contested kingdom of Armenia between the two powers, an arrangement that kept the eastern border largely quiet for decades ^[2]. Peace on two fronts allowed him to rebuild the eastern field armies and the treasury, though taxation grew heavier and the laws of the period show constant anxiety about deserters and draft evasion ^[3].

Any Theodosius I biography must give religion a central place. On February 27, 380 the emperor issued the edict known from its opening words as Cunctos populos, addressed to the people of Constantinople. It declared that all subjects should follow the Christianity professed by the bishops of Rome and Alexandria, the faith of the Council of Nicaea, and it labeled dissenters heretics ^[4]. In 381 he summoned the Council of Constantinople, which confirmed the Nicene creed in the form still recited in many churches today and effectively ended official support for Arian Christianity in the East ^[1].

Later in the reign his laws turned against the old civic cults. Legislation of 391 and 392 banned blood sacrifice, closed temples to worship, and forbade even private domestic rites such as offerings to household gods ^[4]. Enforcement varied greatly from place to place, and paganism did not vanish, but the legal position of the traditional religions was permanently altered. A long tradition also credits Theodosius with the suppression of the ancient Olympic Games, whose last securely attested celebration fell in 393, though the evidence for a formal ban is indirect ^[7].

The most famous religious episode of the reign involved the emperor himself as penitent. In 390, after a riot in Thessalonica in which a garrison commander was lynched, imperial troops massacred a large number of civilians in the city's circus. Bishop Ambrose of Milan refused Theodosius communion until he did public penance, and the emperor eventually complied, appearing in church without his imperial regalia ^[8]. Church writers made the scene an emblem of spiritual authority confronting worldly power, and it echoed through medieval arguments about kings and bishops for a thousand years ^[6].

Twice Theodosius marched west against usurpers. In 383 the general Magnus Maximus rebelled in Britain and killed the emperor Gratian, seizing Gaul, Spain, and Britain. Theodosius tolerated him for several years, but when Maximus invaded Italy in 387 and drove out the young western emperor Valentinian II, war became unavoidable. In the summer of 388 Theodosius defeated Maximus in the Balkans at Siscia and Poetovio, and the usurper was executed at Aquileia ^[2].

The second crisis followed the death of Valentinian II, found hanged at Vienne in May 392. The Frankish general Arbogast, who had dominated the young emperor, elevated a rhetoric teacher named Eugenius to the western throne. Theodosius refused recognition and gathered a great army that included thousands of Gothic federates under commanders such as Alaric and the rising general Stilicho ^[5].

The decisive clash came on September 5 and 6, 394 at the river Frigidus, in the mountain passes east of Aquileia. The first day went badly for the eastern army and its Gothic vanguard suffered heavy losses, but on the second day, aided by a violent bora wind that ancient Christian writers described blowing dust into the enemy's faces, Theodosius broke the western line. Eugenius was captured and beheaded, and Arbogast killed himself ^[7]. For a few months one man again ruled the whole Roman world, from Britain to the Euphrates. He was the last who ever would ^[1].

Theodosius married twice. His first wife, Aelia Flaccilla, was like him of Spanish origin and a committed Nicene Christian remembered for charitable work in Constantinople; she bore his sons Arcadius and Honorius and a daughter, Pulcheria, before her death around 386 ^[3]. In 387 he married Galla, sister of Valentinian II, a match that sealed his alliance with the western dynasty. Their surviving child, Galla Placidia, later became one of the most influential women of the fifth century as empress mother in the West ^[2].

The sources sketch a ruler of strong and sometimes contradictory temperament. He could be generous and approachable, and even hostile pagan writers conceded his personal courage, yet the same tradition records outbursts of temper of which the Thessalonica massacre was the terrible extreme ^[8]. He enjoyed the ceremonies of the hippodrome, and the marble base of the Egyptian obelisk he erected in the circus of Constantinople still shows him presiding in the imperial box with his family and court ^[7].

He promoted relatives and fellow Spaniards freely, building a dynastic network that historians call the Theodosian dynasty. It would occupy both imperial thrones for more than half a century after his death ^[6].

Theodosius fell ill soon after the Frigidus campaign, apparently from an illness described by ancient writers as dropsy, and died at Milan on January 17, 395, a few days past his forty-eighth birthday ^[1]. Ambrose preached his funeral oration. The empire passed, as the emperor had arranged, to his sons: seventeen-year-old Arcadius in Constantinople and ten-year-old Honorius in the West under the guardianship of Stilicho. Though contemporaries saw one empire with two courts, the halves never again came under a single effective ruler, and their paths steadily diverged ^[5].

Christian tradition awarded him the title "the Great", shared among emperors only with Constantine, chiefly for making Nicene Christianity the religion of the Roman state. Among the basic Theodosius I facts, that religious settlement has proved the most durable: the creed his council confirmed in 381 remains a foundation text for Orthodox, Catholic, and many Protestant churches ^[4]. His penance before Ambrose became a standard reference point in later disputes over the limits of royal power ^[8].

Judgments on his statecraft are more divided. Admirers point to a wrecked eastern empire stabilized, two usurpations defeated, and frontiers held with limited resources. Critics answer that the Gothic settlement of 382 and the heavy use of federate troops mortgaged the empire's future, and that within fifteen years of his death Alaric's Goths stood before Rome ^[6]. Both cases start from the same fact: Theodosius governed at the hinge between the classical Roman world and the divided, Christian empires of late antiquity, and he did more than most to swing the door ^[7].