The 420s

Explore 11 historical events from 420–429.

Notable Events

422

Casper, ruler of the Maya city of Palenque

"Casper", also known as 11 Rabbit or Casper II, was an ajaw of the Maya city of Palenque from August 9, 435, to 487. He was the immediate successor of Kʼukʼ Bahlam I, who founded t…

Casper, ruler of the Maya city of Palenque

423

Honorius, Roman emperor (born 384)

Honorius was Roman emperor from 393 to 423. He was the younger son of emperor Theodosius I and his first wife Aelia Flaccilla. After the death of Theodosius in 395, Honorius, under…

Honorius, Roman emperor (born 384)

421 1605 years ago

Constantius III, Roman emperor

Constantius III was briefly Western Roman emperor in 421, having earned the throne through his capability as a general under Honorius. By 411 he had achieved the rank of magister m…

Constantius III, Roman emperor

422

Boniface I, pope of the Catholic Church

Pope Boniface I was the bishop of Rome from 28 December 418 to his death on 4 September 422. His election was disputed by the supporters of Eulalius until the dispute was settled b…

Boniface I, pope of the Catholic Church

420

Jerome, Roman priest, theologian, and saint

Year 420 (CDXX) was a leap year starting on Thursday of the Julian calendar. At the time, it was known in the Roman Empire as the Year of the Consulship of Theodosius and Constanti…

Jerome, Roman priest, theologian, and saint


All Events

423

Honorius, Roman emperor (born 384)

Honorius was Roman emperor from 393 to 423. He was the younger son of emperor Theodosius I and his first wife Aelia Flaccilla. After the death of Theodosius in 395, Honorius, under…

Honorius, Roman emperor (born 384)

422

Casper, ruler of the Maya city of Palenque

"Casper", also known as 11 Rabbit or Casper II, was an ajaw of the Maya city of Palenque from August 9, 435, to 487. He was the immediate successor of Kʼukʼ Bahlam I, who founded t…

Casper, ruler of the Maya city of Palenque

422

Boniface I, pope of the Catholic Church

Pope Boniface I was the bishop of Rome from 28 December 418 to his death on 4 September 422. His election was disputed by the supporters of Eulalius until the dispute was settled b…

Boniface I, pope of the Catholic Church

421 1605 years ago

Constantius III, Roman emperor

Constantius III was briefly Western Roman emperor in 421, having earned the throne through his capability as a general under Honorius. By 411 he had achieved the rank of magister m…

Constantius III, Roman emperor

420

Jerome, Roman priest, theologian, and saint

Year 420 (CDXX) was a leap year starting on Thursday of the Julian calendar. At the time, it was known in the Roman Empire as the Year of the Consulship of Theodosius and Constanti…

Jerome, Roman priest, theologian, and saint