Inspired by Alternate History Geek and LSCatlina's mention of North African Romance dying out in a thread about Coptic Egypt, I am curious of the possibility of the Romanized population of Pannonia surviving to the modern day, either as a minority population or an people with their own small nation. Due to the barbarian invasions of the 4th-5th centuries and the fall of Rome, there were estimated to be at most several thousand living in small, fortified settlements, working for the likes of the Gepids and Avars. I know it's a small number but other people have rebounded like the Hungarians or the Czechs. So what is needed for the Keszthely culture to survive assimilation and make it to the modern day?