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.
Constantine I is proclaimed Roman Emperor by his troops
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
St Gaius ends his reign as Catholic Pope
St Gaius ends his reign as Catholic Pope
St Marcellinus begins his reign as Catholic Pope
The pope is the bishop of Rome and the head of the worldwide Catholic Church. He is also known as the supreme pontiff, Roman pontiff, or sovereign pontiff.
San Marino, one of the smallest nations in the world and the world's oldest republic still in existence, is founded by S
San Marino, one of the smallest nations in the world and the world's oldest republic still in existence, is founded by Saint Marinus
First official Roman edict for persecution of Christians issued by Emperor Diocletian at Nicomedia, ordering all churche
First official Roman edict for persecution of Christians issued by Emperor Diocletian at Nicomedia, ordering all churches to be closed and scriptures burnt
On a voyage preaching the gospel, Saint Fermin of Pamplona is beheaded in Amiens, France
On a voyage preaching the gospel, Saint Fermin of Pamplona is beheaded in Amiens, France
Events After
Roman Emperor Constantine I marries Fausta, daughter of the Emperor Maximian, later murdering her in 326
Roman Emperor Constantine I marries Fausta, daughter of the Emperor Maximian, later murdering her in 326
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.
More from the 300s
First official Roman edict for persecution of Christians issued by Emperor Diocletian at Nicomedia, ordering all churche
First official Roman edict for persecution of Christians issued by Emperor Diocletian at Nicomedia, ordering all churches to be closed and scriptures burnt
Roman Emperor Constantine I marries Fausta, daughter of the Emperor Maximian, later murdering her in 326
Roman Emperor Constantine I marries Fausta, daughter of the Emperor Maximian, later murdering her in 326
San Marino, one of the smallest nations in the world and the world's oldest republic still in existence, is founded by S
San Marino, one of the smallest nations in the world and the world's oldest republic still in existence, is founded by Saint Marinus
Martyrdom of Saint Adrian of Nicomedia, a Roman guard, who is beheaded for converting to Christianity under Roman Empero
Martyrdom of Saint Adrian of Nicomedia, a Roman guard, who is beheaded for converting to Christianity under Roman Emperor Galerius
Frequently Asked Questions
- What happened on July 25, 306?
- 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 Constantine I is proclaimed Roman Emperor by his troops 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 Constantine I is proclaimed Roman Emperor by his troops?
- Key figures include Constantine the Great (Roman emperor from 306 to 337).