Royalty · Politics · AD 244–AD 316

Diocletian — Age & Birthday

Born: 22 December AD 244 · Died: 3 December AD 316 · Age at death: 71

How old was Diocletian when he died?

Diocletian died aged 71. He was born on 22 December AD 244 and died on 3 December AD 316.

Roman emperor who ended a long crisis, created the Tetrarchy of four rulers and became the first emperor to retire voluntarily

Did you know?He was the only Roman emperor to voluntarily abdicate his position, retiring to a palace in modern-day Croatia to grow cabbages.

Quick facts

  • Date of birth22 December AD 244
  • Date of death3 December AD 316
  • Age at death71
  • NationalityRoman
  • BirthplaceDoclea, Montenegro
  • Occupationpolitician, monarch

Editor's Take:

Diocletian rescued the Roman Empire from half a century of chaos and then did something almost no emperor did: he retired. He was born to a humble family in Dalmatia and rose through the army ranks. In 284 the soldiers proclaimed him emperor. He decided the empire was too large for one man and split rule first with a co-emperor, Maximian, and then with two junior Caesars, a system called the Tetrarchy. He reformed taxes, the coinage, provinces and the army. He also launched the last and fiercest persecution of Christians. In 305 he abdicated and withdrew to his vast palace at Split. Its walls still enclose much of the city's old town.

Key Milestones

  1. 284: Proclaimed emperor by the army
  2. 293: Establishes the Tetrarchy
  3. 303: Begins the Great Persecution of Christians
  4. 305: Abdicates and retires to his palace at Split

Diocletian ( DY-ə-KLEE-shən; Latin: Gaius Aurelius Valerius Diocletianus; Ancient Greek: Διοκλητιανός, romanized: Diokletianós; 242/245 – 311/312), nicknamed Jovius, was Roman emperor from 284 until his abdication in 305. He was born Diocles to a family of low status in the Roman province of Dalmatia.

Text from Wikipedia, licensed under CC BY-SA 4.0

Profile

Diocletian: Roman Emperor Who Chose to Retire

Roman emperor, born c. 244

Diocletian was born in Dalmatia around 244.

He became Roman emperor in 284.

He created the Tetrarchy, rule by four emperors.

He abdicated in 305 and retired to Split.

Career highlights

  1. 284Emperor: proclaimed by army
  2. 286Maximian: co-emperor
  3. 293Tetrarchy: four rulers
  4. 301Edict on Prices: price controls
  5. 305Abdication: retires to Split

Did you know?Diocletian's Palace in Split is a UNESCO World Heritage Site.

Age at death
71
Years since death
1709

Explore Diocletian's birthday

Questions people ask

Frequently asked questions

When is Diocletian's birthday?
Diocletian's birthday is December 22. He was born on December 22, AD 244 in Doclea, Montenegro.
How old was Diocletian when he died?
Diocletian died on December 3, AD 316, aged 71.
Who shares a birthday with Diocletian?
Famous people who share Diocletian's December 22 birthday include Basshunter, Giacomo Puccini, Jean Racine, Srinivasa Ramanujan and Jean-François Champollion.

Born on the same day6

December 22 →
Basshunterb. 1984

Basshunter

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Giacomo Puccini1858–1924

Giacomo Puccini

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Jean Racine1639–1699

Jean Racine

LiteratureDied aged 59
View profile Photo (modified): After Jean-Baptiste Santerre · Public domain
Srinivasa Ramanujan1887–1920

Srinivasa Ramanujan

ScienceWould be 138
View profile Photo (modified): Konrad Jacobs · Public domain
Jean-François Champollion1790–1832

Jean-François Champollion

Notable PeopleDied aged 41
View profile Photo (modified): Léon Cogniet · Public domain
Joshua Bassettb. 2000

Joshua Bassett

MusicAge 25
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Reviewed by the Who Shares My Birthday editorial team.

Last reviewed: October 2026