Several times in history, single rulers have had control over multiple countries. Like William of Orange ruling the Netherlands and England or the Georges 1 and 2 with them ruling Hanover and England. (I'm sure there were other instances but I largely know England because I went there twice and got a book about their monarchy)

So do any of you think there might be an instance that through marriage or other means, a player would run two or more factions? Or would there be a different means of handling it?