How many ancestral ethnicities do you have?
How many of those, if any, do you have a cultural or emotional connection to? In what ways?
Example: say your dad’s family was 100% Irish, your maternal grandmother was French, and your maternal grandfather was Cuban. For question #1 you would count three ancestries. For question #2, you might answer that you’ve inherited no family culture, legacy, or traditions from your Irish and French ancestors, but from your Cuban grandfather a few Spanish words and traditional Cuban dishes have trickled down.
Someone will undoubtedly take issue with my terminology; the point is not to debate what is meant by “ethnicity,” what counts as an Irishman, etc. Substitute “culture,” “national origin,” or whatever term you like - I think you can tell what I’m going for.
I count four primary ancestral ethnicities: Irish, Italian, French, Scottish. Who knows how many more are in there going back through the family tree.
My Catholic upbringing is the primary - and almost only - inheritance, from the Irish/Italian/French side. There is an extremely tenuous cultural connection to Ireland, manifested mainly in eating corned beef and cabbage on St. Patrick’s Day. From the Italian side my mother may have cooked spaghetti and lasagna slightly more than the average American housewife. But on the whole I feel no personal connection or identification with Ireland, Italy, France, or Scotland.