As part of the truce agreement, Mavia sent her forces to Thrace to help the Romans fight the Goths at the Battle of Adrianople. Her forces proved less effective outside of their native territory and the Goths pushed the Romans back to Constantinople, even killing the emperor.
Mavia's forces returned home, badly bruised and depleted in number. The new emperor, Theodosius I, favored the Goths, giving them many positions within the Roman establishment, at the expense of the Arabs. After having demonstrated their loyalty to Rome, the Arabs felt increasingly betrayed and mounted another revolt in 383 CE. This revolt was quickly put down and the Tanukh-Roman alliance ended for good, as Rome courted another Arab tribe, the Salih.
To solidify the peace, Mavia married her daughter to Victor, a prominent military official under Valens. Marriage to Victor was a was a big plus, because that suddenly put her in the center of the Roman-Byzantine administration.
Mavia died in Anasartha, east of Aleppo in the heart of the Tanukh tribal territory, where there is an inscription recording her death there in 425 CE.
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