364. Death of Emperor Jovian; Valentinian succeeds him in the West, and Valens in the East.
365. Great earthquake in the Roman dominions.
Gaul is harassed by the Alemanni; Britain by the Picts, Scots, and Saxons.
367. First campaign of Theodosius against the Picts and Scots in Britain.
368. The Alemanni repulsed from Gaul.
369. Theodosius, having subdued a revolt in Britain, returns to Gaul.
370. Saxons infest the coast of Gaul; they are driven back to their ships by Severus.
374. Huns cross the Volga and proceed westward, overpowering the Alani. See "The Huns and Their Western Migration," iii, [352].
St. Ambrose is elected bishop of Milan.
375. Death of Valentinian I; he is succeeded by his son Gratian and Valentinian II, his infant brother.