Gathenhielm said:But I doubt it is the province's name, have you seen it been called Byzantium in there other games.
Look at the name listed under the Byzantine shield at the top left corner of the screenshot - right above all of the province information. It says Byzantion. Now, the only province that would conceivably be named 'Byzantion' in the game is the one that should be named 'Constantinople', or some version thereof. Plus, if I'm not mistaken, that's the name that does show up on that province in today's screenshot.
edit: just checked, and yup, I'm right. On the province that should be 'Constantinople', right behind the Byzantine shield, is a word that starts with 'By' and ends with 'n'. Can you think of anything else other than 'Byzantion' that it would be?