424

Year 424 (CDXXIV) 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 (or, less frequently, year 1177 Ab urbe condita). 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

= By place =

== Roman Empire ==

April 22 – Flavius Anthemius Isidorus becomes the new Praetorian prefect of Illyricum, comprising most of Greece and Serbia, taking office at the capital, Sirmium (now Sremska Mitrovica in Serbia)."Fl. Anthemius Isidorus 9", in The Prosopography of the Later Roman Empire, ed. by Arnold Hugh Martin Jones, et al., (Cambridge University Press, 1971), pp. 631–633 {{ISBN|0-521-20159-4}}
October 23 – Emperor Theodosius II nominates his cousin Valentinian, age 5, the imperial title nobilissimus Caesar ("most noble") of the Western Roman Empire. Valentinian is betrothed to Theodosius's own daughter Licinia Eudoxia, who is only 2 years old.{{cite book|first1=Marjorie|last1=Lightman|first2=Benjamin|last2=Lightman|title=A to Z of Ancient Greek and Roman Women|publisher=Facts On File|location=New York|year=2008|isbn=978-1-43810-794-3|page=124}}
Roman usurper Joannes sends Flavius Aetius, governor of the Palace (cura palatii), to the Huns to ask for their assistance. After negotiating, he returns to Italy with a large force.{{Cite web |last=Anderson |first=Mike |title=Rome and the Visigoths – Allies against the Huns |url=https://www.mikeanderson.biz/2012/03/rome-and-visigoths-allies-against-huns.html |access-date=2025-05-06}}
Winter – A Roman army under the command of Ardaburius leaves Thessalonica (modern Central Macedonia) and marches for Northern Italy, where they make their base at Aquileia.{{Cite web |title=A HISTORY OF THE LATER ROMAN EMPIRE FROM ARCADIUS TO IRENE |url=https://cristoraul.org/ENGLISH/readinghall/THIRDMILLENNIUMLIBRARY/MEDIEVAL-HISTORY/395-800_A-HISTORY-OF-THE-LATER-ROMAN-EMPIRE-FROM-ARCADIUS-TO-IRENE.html |access-date=2025-05-06 |website=cristoraul.org}}

== China ==

July 7 – (Jing'ping era, 2nd year, 5th month (wǔyuè), the yi'you day) 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.Book of Song and South Qi Dynasty, by Li Shi
August 4 – (Jing'ping era, 2nd year, 6th month ( liùyuè), the guichou day) Former Emperor Shao of China, exiled to Suzhouis murdered by an assassin.
September 17 – (Yuanjia era, 1st year, 8th month (bāyuè), dingyou day) 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.

Births

Death

Shao Di, emperor of the Liu Song dynasty (b. 406)

424