Beginning of Church, Pentecost to Charlemagne By Dmiwilliams 133 Pentecost 150 Council Of Jerusalem 164 Christan Persecution 313 Edict Of Milan 325 The Council Of Nicaea 381 The First Council Of Constantinople 387 Augstine Conversion 529 Benedict Beigns his Monastery 590 Gregory I The Great Becomes Pope Jan 1, 800 Pope Leo the Thrid Crowed Charlemagne Emperor