(Part two of three)  “Eastern monks, on hearing the altered [589] creed, accused Westerners of defying the orders of the Council of Ephesus (431) that no addition should be made to the creed approved at Constantinople (381).”  Corrine Winter, the author of this Filioque article in The HarperCollins Encyclopedia of Catholicism, general editor, Richard P. McBrien (San Francisco: Harper San Francisco: A Division of Harper Collins Publishers, 1995) 529-530 does not straightened out the claim that filioque was added in 381.  Anthony W. Keaty in his article, “Nicene Creed” (pages 916-917) indicates that the Church added filioque in 381.  If the Church added the Filioque in 381, there ought to be no quarrel bout defying the 431 orders of the Council of Ephesus.