Marcussen Tius drowned in the Tibo River. In the following 3 13 years, Constantine immediately issued the famous Milan Proclamation, demanding that the persecution of Christians be stopped. After defeating Byzantium, Constantine established a beautiful capital along the Bosphorus, which was then called Constantinople. But before that, Constantine got a terrible leprosy. Pagan priests and doctors offered Constantine a plan: killing children and bathing with their blood can cure diseases. But Constantine rejected the suggestion. Later, St. Peter and Paul appeared in front of Constantine and told him to find Bishop Sylvester who could cure him. After the bishop persuaded Constantine to baptize him with Christian faith, this terrible leprosy disappeared from Constantine the Great. Because of the heretical riots in arius, there was a dispute within the church, so Constantine the Great called the first ecumenical grand council, which was held in Nicaea in 325 AD. At this meeting, heresy was condemned and orthodox beliefs were defended. Constantine's mother, Saint Elena, was very Christian. She visited Jerusalem, found the glorious cross of the Lord Jesus, established the Church of Resurrection in Golgotha, and established many churches in other parts of Jerusalem. In 327 AD, 80-year-old Saint Elena was buried. Constantine died in Nicomeda 10 years later, at the age of 65 in 337 AD. Constantine was buried in Constantinople 12 Church of Saints.