May 22, 337 - Roman Emperor Constantine Dies

Constantine is considered to be the first “Christian Roman Emperor,” and he made it legal to practice Christianity in the Roman Empire. While there is disagreement on whether he was actually a Christian himself, he certainly aided the spread of Christianity throughout the Roman Empire. His conversion experience is said to have occurred when he was in a battle at the Milvian Bridge and saw a vision of a cross in the sky. He died in Constantinople, the city named for him, on May 22, 337.