Events

• End of the Jin Dynasty in China. Liu Yu (Song Wu Di ) is the first ruler of the Song Dynasty.
• Beginning of Southern Dynasties in China.
• Bahram V of Persia succeeds Yazdegerd I of Persia.
• Pharamond leads the Franks across the Rhine.
• 420 is a term often associated with drug culture.

Births

• Glycerius, western Roman Emperor (approximate date)

Deaths

• September 30 - Saint Jerome, translator of the Vulgate
• Orosius, Spanish historian and theologian
• Yazdegerd I of Persia (b. 399)