Constantine I (27 February 272 – 22 May 337), also known as Constantine the Great, or known mononymously as Constantine, was Roman emperor from AD 306 to 337 and the first Roman emperor to convert to Christianity. He played a pivotal role in elevating the status of Christianity in Rome, the Edict of Milan decriminalising Christian practice and ceasing Christian persecution. This was a turning point in the Christianisation of the Roman Empire.
Roman Emperor Constantine the Great is said to have received his famous Vision of the Cross
Constantine I (27 February 272 – 22 May 337), also known as Constantine the Great, or known mononymously as Constantine, was Roman emperor from AD 306 to 337 and the first Roman emperor to convert to...
Historical Significance
Constantine I (27 February 272 – 22 May 337), also known as Constantine the Great, or known mononymously as Constantine, was Roman emperor from AD 306 to 337 and the first Roman emperor to convert to Christianity.
Key People
Events Before
Marcellus I begins his reign as Catholic Pope, serving until his death in 309
Marcellus I begins his reign as Catholic Pope, serving until his death in 309
St. Eusebius begins his reign as Catholic Pope
St. Eusebius begins his reign as Catholic Pope
St. Eusebius ends his reign as Catholic Pope
St. Eusebius ends his reign as Catholic Pope
Roman Emperor Galerius issues the Edict of Toleration, ending the persecution of Christians in the Roman Empire
Early Christians were heavily persecuted throughout the Roman Empire until the 3rd century.
St Miltiades begins his reign as Catholic Pope
St Miltiades begins his reign as Catholic Pope
Events After
Start of Roman (Pontifical) Indiction
Start of Roman (Pontifical) Indiction
Licinius unifies the entire Eastern Roman Empire under his rule
The history of the Jews in the Roman Empire traces the interaction of Jews and Romans during the period of the Roman Empire (27 BC – 476 AD).
St Silvester I begins his reign as Catholic Pope
St Silvester I begins his reign as Catholic Pope
BC Battle of Crannon between Athens and Macedon following the death of Alexander the Great
The Battle of the Echinades was one of the naval battles of the Lamian War (323–322 BC), fought between the Macedonian navy under Cleitus the White and the Athenian navy.
More from the 310s
Start of Roman (Pontifical) Indiction
Start of Roman (Pontifical) Indiction
Roman Emperor Galerius issues the Edict of Toleration, ending the persecution of Christians in the Roman Empire
Early Christians were heavily persecuted throughout the Roman Empire until the 3rd century.
St Silvester I begins his reign as Catholic Pope
St Silvester I begins his reign as Catholic Pope
St. Eusebius begins his reign as Catholic Pope
St. Eusebius begins his reign as Catholic Pope
Frequently Asked Questions
- What happened on October 27, 312?
- Constantine I (27 February 272 – 22 May 337), also known as Constantine the Great, or known mononymously as Constantine, was Roman emperor from AD 306 to 337 and the first Roman emperor to convert to Christianity. He played a pivotal role in elevating the status of Christianity in Rome, the Edict of Milan decriminalising Christian practice and ceasing Christian persecution. This was a turning point in the Christianisation of the Roman Empire.
- Why is Roman Emperor Constantine the Great is said to have received his famous Visio... significant?
- Constantine I (27 February 272 – 22 May 337), also known as Constantine the Great, or known mononymously as Constantine, was Roman emperor from AD 306 to 337 and the first Roman emperor to convert to Christianity.
- Who was involved in Roman Emperor Constantine the Great is said to have received his famous Visio...?
- Key figures include Constantine the Great (Roman emperor from 306 to 337).