Who was alive in AD 421?
43 of the people we track were surely alive in AD 421. The best known are listed first, with the age each reached that year; a range such as 17–21 means the birth year itself is uncertain.
Died in AD 421: Constantius III.
Augustine of Hippo67
Pope Leo I21–33
Pope Gelasius I10–11
Pope Sixtus III28–33- Pope Boniface I48–53
Saint Patrick33–38
Honorius37
Theodosius II20
Pope Hilarius3–8
Cyril of Alexandria44–45
Mesrop Mashtots57–61
Nestorius31–41
Valentinian III2
Gaiseric31–32
Flavius Aetius21–31
Marcian28–29
Leo I17–22
Proclus9
Theodoric I27–28
Petronius Maximus22–27
Avitus26
Constantius III†
Anthemius0–1
Faxian81–84
Libius Severus0–1
Bahram V15- Socrates of Constantinople38–44
Galla Placidia34–35
Tao Yuanming56
Macrobius48–53
John Cassian61- Chlodio25–30
- Pulcheria22
Euric0–1- Priscus8–13
Thorismund1–2
Martianus Capella58–64
Simeon Stylites29–34- Sozomen18–24
Aelia Eudocia12–21
Ricimer16- Peter Chrysologus40–41
Movses Khorenatsi8–13
Where the people alive in AD 421 were born
Birthplaces as a list
- Augustine of Hippo: Thagaste
- Pope Leo I: Tuscany
- Pope Gelasius I: Africa
- Pope Sixtus III: Rome
- Pope Boniface I: Rome
- Saint Patrick: Roman Britain
- Honorius: Istanbul
- Theodosius II: Constantinople
- Pope Hilarius: Sardinia
- Cyril of Alexandria: El Mahalla El Kubra
- Nestorius: Kahramanmaraş
- Valentinian III: Ravenna
- Gaiseric: Lake Balaton
- Flavius Aetius: Silistra
- Marcian: Thrace
- Leo I: Thrace
- Proclus: Constantinople
- Petronius Maximus: Rome
- Avitus: Clermont-Ferrand
- Constantius III: Niš
- Anthemius: Constantinople
- Faxian: Xiangyuan County
- Libius Severus: Lucania
- Socrates of Constantinople: Constantinople
- Galla Placidia: Constantinople
- Tao Yuanming: Lushan City
- Macrobius: Rome
- John Cassian: Dobruja
- Pulcheria: Constantinople
- Priscus: Panion
- Martianus Capella: M'Daourouch
- Simeon Stylites: Kozan
- Sozomen: Beit Lahia
- Aelia Eudocia: Athens
- Peter Chrysologus: Imola
- Movses Khorenatsi: Harman