The Cappadocian Fathers reference article from the English Wikipedia on 24-Apr-2004
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Cappadocian Fathers

The Cappadocian Fathers are the 4th century church fathers Basil the Great, Gregory Nazianzen, and Basil's brother Gregory of Nyssa, who made major contributions to the definition of the Trinity finalized at the First Council of Constantinople in 381 and the Nicene Creed.