The Conferences: How we came to Diolcos and were received by Abbot Piamun. Piamun, who has already been spoken of in XVII. xxiv., is also mentioned by Rufinus, Palladius (the Lausiac History, clxxii.), and Sozomen (H. E. VI. xxix.), all of whom tell, with slight variation, the same story, how that one day while he was officiating at the altar, he saw an angel writing down the names of some of the brethren, and passing by the names of others, all of whom Piamun on subsequent inquiry found to have been guilty of some grievous sin · Theoria