http://en.wikipedia.org/wiki/John_Chrysostom
John Chrysostom (c. 347–407),
Archbishop of Constantinople, was an important Early Church
Father. He is known for his eloquence in preaching and
public speaking, his denunciation of abuse of authority by
both ecclesiastical and political leaders, the Divine
Liturgy of St. John Chrysostom, and his ascetic
sensibilities. After his death in 407 (or, according to some
sources, during his life) he was given the Greek surname
chrysostomos, meaning "golden mouthed", rendered in English
as Chrysostom.
The Orthodox and Eastern Catholic Churches honor him as a
saint and count him among the Three Holy Hierarchs, together
with Basil the Great and Gregory Nazianzus. He is recognized
by the Eastern Orthodox Church and the Catholic Church as a
saint and as a Doctor of the Church. Churches of the Western
tradition, including the Roman Catholic Church, some
Anglican provinces, and parts of the Lutheran Church,
commemorate him on 13 September. Some Lutheran and many
Anglican provinces commemorate him on the traditional
Eastern feast day of 27 January. The Coptic Orthodox Church
of Alexandria also recognizes John Chrysostom as a saint
(with feast days on 16 Thout and 17 Hathor).