What happens to the Pope if you take Rome? I just took Latium playing as Byzantium. Does the Pope move somewhere else?
Watch out though. Don't give it to a Catholic. And Catholics in your realm can use a faction to declare war for the Pope (ie Duke of Latium is Orthodox but has a count who is catholic. He then starts a faction for Pope and declares war. He can get significant back up from other vassals in your realm). However as you are a emperor it is possible that the Pope would become your vassal, which would be amusing. Though only if the Pope has no other bishopric. Mine didn't move to any for a good 80 years afterwards