433. Attila, King of the Huns, begins his reign.[75] St. Patrick preaches in Ireland.
435. Nestorius exiled to the Libyan desert.
439. The Vandals, under Genseric, take Carthage.
440. Leo the Great elected pope.
441. Attila and his Huns pass the Danube; they invade Illyricum. See [HUNS INVADE THE EASTERN ROMAN EMPIRE], iv, 28.
442. Valentinian by a treaty of peace cedes Africa to Genseric. A comet is visible.
444. Attila murders his brother, Bleda, and rules alone over the Huns.
446. Britons in vain apply to Aetius for aid against the Picts and Scots.
Thermopylæ passed by the Huns; the Eastern Emperor makes humiliating terms of peace with Attila. See [HUNS INVADE THE EASTERN ROMAN EMPIRE], iv, 28.
Pope Leo assumes a tone of high authority, and asserts the supremacy of the Roman Pontiff over all other bishops.