*477 Bishop Timothy ("the Wild Cat") of Alexandria, who opposed the Council of Chalcedon, exiled the Orthodox bishops from Egypt.
*484 Founding of the Monastery of St. Sabbas in the Judean wilderness; Synod of Beth Papat in Persia declares the [[Nestorianism|Nestorian doctrine]] as the official theology of the [[Assyrian Church of the East]], centered in Edessa.
. Death of Peter the Fuller, the non-Chalcedonian Patriarch of Antioch.
*490 St. [[Brigid of Kildaire|Brigid]] founds the monastery of Kildare in Ireland.
*521 St. [[Columba of Iona|Columba]] is born.