Category:Council of Chalcedon

The Fourth Ecumenical Council, held in 451, from 8 October until 1 November inclusive, at Chalcedon, a city of Bithynia in Asia Minor. The Council of Chalcedon (451) -- 150 bishops under Pope Leo the Great and the Emperor Marcian defined the two natures (Divine and human) in Christ against Eutyches, who was excommunicated.