Paragraph 4 of this homily includes this:
4. And I will speak of a fourth crown, arising for us out of this episcopate. What then is this? The fact that he was entrusted with our own native city [Antioch]. For it is a laborious thing indeed to have the oversight of a hundred men, and of fifty alone. But to have on one’s hands so great a city, and a population extending to two hundred thousand, of how great virtue and wisdom do you think there is a proof? For as in the care of armies, the wiser of the generals have on their hands the more leading and more numerous regiments, so, accordingly, in the care of cities. The more able of the rulers are entrusted with the larger and more populous. And at any rate this city was of much account to God, as indeed He manifested by the very deeds which He did. At all events the master of the whole world, Peter, to whose hands He committed the keys of heaven, whom He commanded to do and to bear all, He bade tarry here for a long period. Thus in His sight our city was equivalent to the whole world. But since I have mentioned Peter, I have perceived a fifth crown woven from him, and this is that this man [St Ignatius] succeeded to the office after him. . . .