Irish & Italian Affinity
What is it about Irish & Italian intermarriage, as to why it's so common (at least traditionally)?
I myself am the result of such an intermarriage, as are all my cousins on my Irish mother's side (cousins on my father's side are 100% Italian).
It can't be due to the common religion (Roman Catholicism) alone, because there are many ethnic groups who are part of Catholicism.
Does anyone have any ideas on why it is that there's such an affinity between the Irish and Italians?
All ideas welcome!