I don't really know if there are unbiased terms in order to define one's ethnicity.. btw my entire family has been living in Emilia
for centuries, so - apart from some distant relatives from the northernmost part of Italy and from Innsbruck - I'm 100% Emilian.. since in Italy pretty much every region or macro-region has its own peculiar somatic traits..
The fact that virtually every Emilian has green/blue eyes and a lighter skin than other Northern Italians from Veneto or Lombardy is one of the many results of the massive presence of the celts so-called cisalpine gauls and/or boii and - mainly - of more than one millennium of German and Austrian reign (and consequent migrations - the Este family who ruled my province for 600 years originates from Mainz). Unfortunately now we have mafia, incompetent politicians and rampant lawlessness, this is why I miss Austria.., but we have to be satisfied of our own identity as Emilians I think.. alas!
(Yeah Bolelli is Emilian but don't take him as an example.....