Flavius Bauto (died c. 385) was a Romanised Frank who served as a magister militum of the Roman Empire and was a powerful figure in the court of emperor Valentinian II.
Emperor Valentinian II, previously subordinate to his half-brother Gratian, now became the technical senior ruler, although his authority was limited to Italy and he suffered from a reputation for weakness, stemming from his accession to the throne as a child.
[2][3] According to bishop Ambrose, Maximus accused Bauto of attacking him with barbarian troops and intending to use Valentinian II as a puppet emperor to acquire power for himself.
[5][2] He and Rumoridus, who was definitely a polytheist, were present before Valentinian II when Ambrose successfully convinced the emperor against Quintus Aurelius Symmachus' proposal to restore the pagan Altar of Victory, which had been earlier removed from the Curia Julia.
[2] Afterwards, his daughter Aelia Eudoxia resided in the house of a son of Promotus, a nemesis of Rufinus, and later married Emperor Arcadius in 395, becoming one of the more powerful empresses of the period.