Yes, I get it with your post. Southern Italy was settled by Celts from the north and Greeks from the south, but of course there were raids from other places. Glad you got the info you were seeking.
I share the same curiosity — I know the national origin of several great- and great-greats, but I also know their nations were subject to raids in ancient times— one or two towns in particular— and I’d like to know about what lies beneath the label, so to speak.
As an example (not me), there are now a lot of Arabs and Africans who are born in UK and are British citizens; but their descendants would probably want to know more.
Sicily was invaded many times by the Muslims that was my concern . LOL