John XII of Constantinople
John XII of Constantinople was the Ecumenical Patriarch of Constantinople from 1294 to 1303. John XII was born in Sozopolis on the western Black Sea coast. Prior to becoming patriarch, he was known as Kosmas.
John XII of Constantinople was the Ecumenical Patriarch of Constantinople from 1294 to 1303. John XII was born in Sozopolis on the western Black Sea coast. Prior to becoming patriarch, he was known as Kosmas.