424

Year 424 was a leap year starting on Tuesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Castinus and Victor. The denomination 424 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Events

April 22 - Flavius Anthemius Isidorus becomes the new Praetorian prefect of Illyricum, comprising most of Greece and Serbia, taking office at the capital, Sirmium.
October 23 - Emperor Theodosius II nominates his cousin Valentinian, age 5, the imperial title nobilissimus Caesar of the Western Roman Empire. Valentinian is betrothed to Theodosius's own daughter Licinia Eudoxia, who is only 2 years old.
Roman usurper Joannes sends Flavius Aetius, governor of the Palace, to the Huns to ask for their assistance. After negotiating, he returns to Italy with a large force.
Winter - A Roman army under the command of Ardaburius leaves Thessalonica and marches for Northern Italy, where they make their base at Aquileia.
China
July 7 - Emperor Shao of the Liu Song dynasty of China, is deposed by government ministers Xu Xianzhi and Fu Liang, who install his younger brother Prince Liu Yilong as the new Emperor.
August 4 - Former Emperor Shao of China, exiled to Suzhouis murdered by an assassin.
September 17 - Prince Liu Yilong is formally enthroned as the Emperor Wen of Song of China at its capital in Jiankang.
Religion
Church of the East declares itself independent, under Catholicos of the East Dadisho.
Death
Shao Di, emperor of the Liu Song dynasty