On this maps you will find the precise delimitation and name of french region dioceses in the XIV century
datafacts.applirecherche.unilim.fr
Col&Mon

Interactive map of all European Dioceses here:Perhaps a bit much to ask, but anyone know of any good sources on the various dioceses/bishoprics and overall structure of the Catholic and Orthodox churches in the 14th century (and perhaps other Christian churches, if at all possible)? I've got a mod that I want to make once PC comes out that adds some depth to the major Christian faiths by representing bishoprics as IOs with landless bishop tags as being the "owner", with some additional IOs above that to capture things like ecclesiastical provinces and the like. To do that, though, it would help if I had some strong resources as to what those actually look like in the 14th century.