Who Was Alive

Were Decius and Diocletian alive at the same time?

Yes. Decius and Diocletian were alive at the same time, from 240s to AD 251.

Decius

Decius

Roman emperor

Born AD 201 · died 1 July AD 251, aged 49 or 50

Diocletian

Diocletian

Roman emperor

Born 240s · died 3 December AD 316

  1. Septimius Severus, AD 146 – AD 211
  2. Nagarjuna, c. AD 150 – c. AD 250
  3. Tertullian, c. AD 160 – c. AD 240
  4. Decius, AD 201 – AD 251
  5. Plotinus, AD 205 – AD 270
  6. Aurelian, AD 214 – AD 275
  7. Diocletian, 240s – AD 316
  8. Constantine the Great, c. AD 272 – AD 337
  9. Saint George, AD 275 – c. AD 303
  10. Athanasius of Alexandria, AD 296 – AD 373

Decius and Diocletian in bold, with some of their best-known contemporaries; dashed lines mark world events. Drag across, or use the arrow keys, to see the age each reached in any year. Faded ends mark uncertain dates.

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Where Decius and Diocletian were born

Decius and Diocletian are labelled, with the contemporaries on the timeline. Each dot is a birthplace from Wikidata (9 of 10 placed); tap one to open that person.
Birthplaces as a list