Provinces are named after cities, which is wrong IMHO. It helps to find a province easier, but it is still somehow strange. Practically every province name is wrong, from Vienna to Hamburg.
Not to mention the fact, that, for example, Bordeaux wasn't the only city in Aquitaine and the fact that it IS its capital (Poitiers doesn't even exist in this game) doesn't mean that whole province should be named after it.

Perhaps the strangest province name, IMO, is Zagreb for the whole northern Balkan peninsula. Zagreb became important city with its own autonomy in the middle of 13th century + there were dozens of other more important cities in that region.