We have updated our Community Code of Conduct. Please read through the new rules for the forum that are an integral part of Paradox Interactive’s User Agreement.
You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
yeah there are some historical examples about this - I'm reading a book about Byzantium right now. But granted this might be valid for any kingdom or ducal title ...
what he said. And remember that when the city was taken noone claimed to be Byzantine emperor - there was empire of Nikae but it didnt restore until it was taken back