John Cassian

Christian monk and theologian

Born AD 360 · died AD 435
Also known as Joannes Cassianus, Ioannes Cassianus, Joannus Cassianus

Who was alive at the same time as John Cassian?

Drag across the timeline, or use the arrow keys, to see who was alive in any year and the age each person reached that year. Dashed lines mark world events. Faded ends mark uncertain dates.

When John Cassian was born, Augustine of Hippo was 5 or 6, Julian was 28 or 29, Theodosius I was 12 or 13, Basil of Caesarea was 30 or 31 and Athanasius of Alexandria was 63 or 64.

When John Cassian died, Pope Gelasius I was 24 or 25, Theodosius II was 33 or 34, Cyril of Alexandria was 58 or 59, Julius Nepos was 4 or 5 and Valentinian III was 15 or 16.

Born during John Cassian’s lifetime: Pope Leo I, Pope Gelasius I, Pope Sixtus III, Pope Boniface I, Pope Simplicius, Saint Patrick, Honorius and Theodosius II.

Not quite contemporaries: Pope Hormisdas was born about 14 years after John Cassian died, Pope Felix III was born about 2 years after John Cassian died, Justin I was born about 14 years after John Cassian died and Constans died about 10 years before John Cassian was born.

What happened in John Cassian’s lifetime

Visigoths sack Rome AD 410John Cassian was 49 or 50

Where John Cassian’s contemporaries were born

John Cassian is labelled; the others are the best-known people we track who lived at the same time. Each dot is a birthplace from Wikidata (75 of 81 placed); tap one to open that person.

Birthplaces as a list

John Cassian: Dobruja
Athanasius of Alexandria: Alexandria
Pope Damasus I: Egitania
Pope Liberius: Rome
Martin of Tours: Savaria
Constantius II: Sirmium
Ammianus Marcellinus: Antioch
Basil of Caesarea: Kayseri
Gregory of Nazianzus: Nazianzus
Julian: Constantinople
Pope Siricius: Rome
Ambrose: Augusta Treverorum
Pope Anastasius I: Rome
Jerome: Dalmatia
John Chrysostom: Antioch
Theodosius I: Coca
Augustine of Hippo: Thagaste
Hypatia: Alexandria
Pope Boniface I: Rome
Saint Patrick: Roman Britain
Pope Leo I: Tuscany
Pope Sixtus III: Rome
Pope Gelasius I: Africa
Pope Simplicius: Tivoli
Honorius: Istanbul
Theodosius II: Constantinople
Valentinian I: Vinkovci
Arcadius: Hispania
Pope Hilarius: Sardinia
Valens: Vinkovci
Cyril of Alexandria: El Mahalla El Kubra
Julius Nepos: Dalmatia
Nestorius: Kahramanmaraş
Valentinian III: Ravenna
Zeno: Zenopolis in Isauria
Jovian: Singidunum
Gaiseric: Lake Balaton
Flavius Aetius: Silistra
Marcian: Thrace
Ephrem the Syrian: Nusaybin
Shapur II: Firuzabad
Hilary of Poitiers: Poitiers
Ausonius: Bordeaux
Gratian: Sirmium
Anastasius I Dicorus: Durrës
Leo I: Thrace
Proclus: Constantinople
Ulfilas: Dacia
Claudian: Alexandria
Petronius Maximus: Rome
Avitus: Clermont-Ferrand
Valentinian II: Augusta Treverorum
Constantius III: Niš
Cyril of Jerusalem: Jerusalem
Stilicho: Constantinople
Anthemius: Constantinople
Glycerius: Dalmatia
Sidonius Apollinaris: Lugdunum
Samudragupta: Indraprastha
Faxian: Xiangyuan County
Orosius: Braga
Libius Severus: Lucania
Aurelius Victor: Africa
Magnus Maximus: Hispania
Kumārajīva: Kushan Empire
Saint Monica: Thagaste
Pelagius: Roman Britain
Socrates of Constantinople: Constantinople
Galla Placidia: Constantinople
Genevieve: Nanterre
Tao Yuanming: Lushan City
Syagrius: Lyon
Prudentius: Calahorra
Macrobius: Rome
Synesius: Cyrene

Compare John Cassian

The 104 best-known contemporaries

104 of the people we track were surely alive at the same time as John Cassian. All of them are listed here. See also everyone alive in AD 398.

Augustine of Hippo AD 354 – AD 430
Hypatia c. AD 360 – AD 415
Jerome c. AD 345 – c. AD 420
John Chrysostom c. AD 350 – AD 407
Ambrose c. AD 339 – AD 397
Pope Leo I c. AD 394 – AD 461
Julian AD 331 – AD 363
Theodosius I AD 347 – AD 395
Basil of Caesarea AD 329 – AD 379
Gregory of Nazianzus c. AD 330 – c. AD 390
Athanasius of Alexandria AD 296 – AD 373
Pope Damasus I AD 305 – AD 384
Pope Gelasius I AD 410 – AD 496
Martin of Tours c. AD 327 – AD 397
Pope Liberius c. AD 310 – AD 366
Pope Sixtus III c. AD 390 – AD 440
Pope Siricius AD 334 – AD 399
Pope Boniface I c. AD 370 – AD 422
Pope Simplicius c. AD 420 – AD 483
Constantius II AD 317 – AD 361
Ammianus Marcellinus c. AD 330 – c. AD 395
Pope Anastasius I AD 340 – AD 401
Saint Patrick c. AD 385 – c. AD 461
Honorius AD 384 – AD 423
Theodosius II AD 401 – AD 450
Valentinian I AD 321 – AD 375
Arcadius AD 377 – AD 408
Pope Hilarius c. AD 415 – AD 468
Valens AD 328 – AD 378
Cyril of Alexandria AD 376 – AD 444
Julius Nepos AD 430 – AD 480
Mesrop Mashtots c. AD 362 – AD 440
Nestorius 380s – c. AD 451
Valentinian III AD 419 – AD 455
Zeno AD 425 – AD 491
Jovian AD 331 – AD 364
Gaiseric AD 389 – AD 477
Flavius Aetius 390s – AD 454
Marcian AD 392 – AD 457
Ephrem the Syrian c. AD 306 – AD 373
Shapur II c. AD 310 – AD 379
Hilary of Poitiers AD 315 – AD 367
Ausonius AD 310 – AD 395
Gratian AD 359 – AD 383
Majorian 420s – AD 461
Anastasius I Dicorus AD 430 – AD 518
Leo I c. AD 401 – AD 474
Proclus AD 412 – AD 485
Ulfilas c. AD 309 – AD 383
Claudian c. AD 370 – c. AD 405
Theodoric I AD 393 – AD 451
Petronius Maximus c. AD 396 – AD 455
Avitus AD 395 – AD 457
Valentinian II AD 371 – AD 392
Constantius III c. AD 370 – AD 421
Cyril of Jerusalem c. AD 313 – c. AD 386
Stilicho AD 359 – AD 408
Anthemius AD 420 – AD 472
Glycerius AD 430 – 480s
Sidonius Apollinaris c. AD 430 – c. AD 489
Epiphanius of Salamis c. AD 315 – AD 403
Samudragupta AD 335 – AD 380
Faxian c. AD 339 – c. AD 423
Orosius c. AD 385 – c. AD 418
Libius Severus AD 420 – AD 465
Aurelius Victor c. AD 321 – c. AD 391
Bahram V AD 406 – c. AD 439
Magnus Maximus AD 335 – AD 388
Kumārajīva c. AD 345 – AD 413
Saint Monica AD 332 – AD 387
Pelagius c. AD 354 – c. AD 420
Socrates of Constantinople c. AD 380 – c. AD 440
Galla Placidia AD 386 – AD 450
Genevieve AD 423 – AD 502
Tao Yuanming AD 365 – AD 427
Syagrius c. AD 430 – c. AD 487
Prudentius AD 348 – c. AD 411
Macrobius c. AD 370 – c. AD 431
Synesius AD 370 – AD 413
Chlodio c. AD 393 – AD 448
Pulcheria AD 399 – AD 453
Euric AD 420 – AD 484
Theodoric II AD 426 – AD 466
Libanius c. AD 314 – AD 393
Mary of Egypt c. AD 344 – c. AD 421
Priscus c. AD 410 – c. AD 471
Thorismund c. AD 420 – AD 453
Emperor Nintoku AD 290 – AD 399
Ardashir II 310s – AD 383
Martianus Capella c. AD 360 – c. AD 428
Simeon Stylites c. AD 390 – AD 459
Sozomen c. AD 400 – c. AD 450
Aelia Eudocia 400s – AD 460
Ricimer AD 405 – AD 472
Athanaric AD 318 – AD 381
Evagrius Ponticus c. AD 345 – AD 399
Sigeric c. 370s – AD 415
Peter Chrysologus AD 380 – AD 450
Movses Khorenatsi c. AD 410 – c. AD 489
Saint Marinus AD 275 – AD 366
Macarius of Egypt c. AD 301 – AD 391
Eugenius AD 345 – AD 394
Ermanaric c. AD 291 – c. AD 376
Zu Chongzhi AD 429 – AD 501