This ruler issued the Edict of Milan.
This ruler oversaw the murder of Crispus and Fausta. The gold coin this man established, the solidus, was used for centuries. The son of Helena, this ruler consolidated power by defeating Licinius at Chrysopolis. In one battle, this man defeated Maxentius. This ruler issued the Edict of Milan. This man allegedly saw a cross with the words "In this sign, conquer" during the Battle of Milvian Bridge. For 10 points, name this first Christian Roman Emperor.
This ruler oversaw the murder of Crispus and Fausta. The gold coin this man established, the solidus, was used for centuries.
{Constantine} I of Rome [or Constantine the Great; or Flavius Valerius Constantinus; prompt