John Chrysostom (c.347 – 407)
John Chrysostom was an important Early Church Father. He was Archbishop of Constantinople and is known for his preaching, his denunciation of the abuse of church and political leaders’ authority, his liturgical writings and his ascetic sensibilities. And, of course, his celibacy.
More about John Chrysostom:
A crucified life: John Chrysostom: fourth century celibate leader | http://en.wikipedia.org/wiki/John_Chrysostom