Flavius Bauto was a Romanised Frank

Franks

The Franks were a confederation of Germanic tribes first attested in the third century AD as living north and east of the Lower Rhine River. From the third to fifth centuries some Franks raided Roman territory while other Franks joined the Roman troops in Gaul. Only the Salian Franks formed a...

 who served as a magister militum

Magister militum

Magister militum was a top-level military command used in the later Roman Empire, dating from the reign of Constantine. Used alone, the term referred to the senior military officer of the Empire...

of the Western Roman Empire

Western Roman Empire

The Western Roman Empire was the western half of the Roman Empire after its division by Diocletian in 285; the other half of the Roman Empire was the Eastern Roman Empire, commonly referred to today as the Byzantine Empire....

.

When the usurper Magnus Maximus

Magnus Maximus

Magnus Maximus , also known as Maximianus and Macsen Wledig in Welsh, was Western Roman Emperor from 383 to 388. As commander of Britain, he usurped the throne against Emperor Gratian in 383...

 invaded Italy in an attempt to replace Valentinian II

Valentinian II

Flavius Valentinianus , commonly known as Valentinian II, was Roman Emperor from 375 to 392.-Early Life and Accession :...

, Bauto led the forces of the Eastern Emperor Theodosius I

Theodosius I

Theodosius I , also known as Theodosius the Great, was Roman Emperor from 379 to 395. Theodosius was the last emperor to rule over both the eastern and the western halves of the Roman Empire. During his reign, the Goths secured control of Illyricum after the Gothic War, establishing their homeland...

 and defeated the rebel. He died soon after, likely of natural causes. His daughter, Aelia Eudoxia

Aelia Eudoxia

Aelia Eudoxia was the Empress consort of the Byzantine Emperor Arcadius.-Family:She was a daughter of Flavius Bauto, a Romanised Frank who served as magister militum in the Western Roman army during the 380s. The identity of her father is mentioned by Philostorgius...

 married Emperor Arcadius

Arcadius

Arcadius was the Byzantine Emperor from 395 to his death. He was the eldest son of Theodosius I and his first wife Aelia Flaccilla, and brother of the Western Emperor Honorius...

 in 395, becoming one of the more powerful empresses of Late Antiquity

Late Antiquity

Late Antiquity is a periodization used by historians to describe the time of transition from Classical Antiquity to the Middle Ages, in both mainland Europe and the Mediterranean world. Precise boundaries for the period are a matter of debate, but noted historian of the period Peter Brown proposed...

. He was succeeded by his son Arbogastes.

Bauto opposed Ambrosius

Ambrose

Aurelius Ambrosius, better known in English as Saint Ambrose , was a bishop of Milan who became one of the most influential ecclesiastical figures of the 4th century. He was one of the four original doctors of the Church.-Political career:Ambrose was born into a Roman Christian family between about...

 when the latter proposed to remove the pagan Altar of Victory

Altar of Victory

The Altar of Victory was located in the Roman Senate House bearing a gold statue of the goddess Victory. The altar was established by Octavian in 29 BC in honor of the defeat of Antony and Cleopatra at Actium. The statue depicted a winged woman, holding a palm and descending to present a laurel...

 from the senate of Rome. He lost the case and the Altar of Victory was removed. After his death Arbogastes became the leader of a short pagan revival.

See "The Historia" of Arbogast

Arbogast

Arbogast is a Germanic name composed of arbi ‘inheritance’ + gast ‘stranger’.Arbogast may refer to:* Arbogast , a Frankish general in the late Roman Empire* Saint Arbogast, an Irish saint...

 and Bauto.