As a nation state, Italy has emerged only in 1871. Until then the country was politically divided into a large number of independant cities, provinces and islands. The currently available evidences point out to a dominant Etruscan, Greek and Roman cultural influence on today's Italians.
I can only guess that some Irish came to Italy for the same reason that tens of thousands (?) came to the US - because of the diseased potato crops and the famine which ensued.
My mom and dad came from two very different classes of Italian society. Dad's mom came from a very aristocrat family and mom's came from farmers and agricultural workers. When my mom's parents came to the US, they left their oldest son Giovanni in the care of my maternal grandmother's parents. I hea...