It's a tempting hypothesis - it does feel instantly plausible if one has a decent grounding in ancient literature and history. But as others have said, short of

It's a tempting hypothesis - it does feel instantly plausible if one has a decent grounding in ancient literature and history. But as others have said, short of building a time machine and kidnapping an Etruscan farmer... how could we ever disprove it? Come to think of it, even that wouldn't do it - testing one farmer wouldn't tell us anything about his compatriots and rulers.