History

Edict of Milan (313AD)

313

Edict of Milan was the treaty where the Christians agreed on treating the Christians benevolently within the Roman Empire. Western Roman Emperor Constantine I, and Licinius, who ruled the Balkans, met in Milan and agreed to change policies towards Christians. They met when Christianity was legalized, not official.

Pope Sylvester I consecrates the Basilica of St. Peter built by Constantine the Great over the tomb of the Apostle.

326

Sack of Rome

410

Alaric and his Visigoths burst in by the Porta Salaria on the northeast of the city Rome

Ecumenical Council of Chalcedon opens.

451

Mercurius becomes Pope John II

533

He becomes the first pope to take a regnal name. John II obtains valuable gifts as well as a profession of orthodox faith from the Byzantine emperor Justinian.

Liturgical, linguistic, and political divisions

Jul 16, 1054

: Liturgical, linguistic, and political divisions cause a permanent split between the Eastern and Western Churches, known as the East–West Schism or the Great Schism. The three legates, Humbert of Mourmoutiers, Frederick of Lorraine, and Peter, archbishop of Amalfi, entered the Cathedral of the Hagia Sophia during mass on a Saturday afternoon and placed a papal Bull of Excommunication on the altar against the Patriarch Michael I Cerularius. The legates left for Rome two days later, leaving behin

First Crusade

Nov 27, 1095

The First Crusade was first of the many crusades that attempted to capture the Holy Lands. This was launched by Pope Urban II in November 27th, 1095. During the crusade, people from many of Western Europe travelled over land and by sea, first to Constantinople and then on towards Jerusalem. Then, they assaulted and captured it in 1099.

Pope Urban II preaches to defend the eastern Christians, and pilgrims to the Holy Land, at the Council of Clermont

Nov 27, 1095

Siege of Jerusalem

Sep 20, 1187

The Siege of Jerusalem was a siege on Jerusalem in 1187. On October 2nd or 1187, Balian of Ibelin surrendered the city to Saladin. The defeat of Jerusalem lead to the Third Crusade.

The Siege of Jerusalem

Oct 2, 1187

Ayyubid forces led by Saladin capture Jerusalem, prompting the Third Crusade.

Lotario de' Conti di Segni elected Pope Innocent III

Jan 8, 1198

Lotario de' Conti di Segni elected Pope Innocent III. His pontificate is often considered the height of the temporal power of the papacy.

Fourth Ecumenical Lateran Council opened by Pope Innocent III

Nov 11, 1215

Pope Boniface VIII issues the Papal bull Unam sanctam

Nov 18, 1302

France for the purpose of making provision in regard to the Order of Knights Templar

Aug 12, 1308

Pope Clement V issues the Bull Regnans in coelis calling a general council to meet on October 1, 1310, at Vienne in France for the purpose of making provision in regard to the Order of Knights Templar, both the individual members and its lands, and in regard to other things in reference to the Catholic Faith, the Holy Land, and the improvement of the Church and of ecclesiastical persons"

William of Ockham flees Avignon

May 26, 1328

William of Ockham flees Avignon. Later, he was excommunicated by Pope John XXII, whom Ockham accused of heresy.