Fritigern (
frĭt'ĭgûrn), d. 380, Visigothic chieftain. An intermittent rival of
Athanaric for leadership of the
Visigoths, he adopted Arian Christianity (see
Arianism) and thus gained the support of Emperor
Valens. Fleeing the invading Huns, Fritigern was given permission (376) by Valens to cross the Danube and enter Roman territory. After being badly mistreated, the Goths rebelled and in 378 Fritigern defeated and killed Valens at the battle of Adrianople. The Goths subsequently ravaged the Balkan Peninsula until the Roman general Theodosius (later
Theodosius I) restored peace. Fritigern is also known as Fridigern.