Nationality?

[Welsh cake]

I talk a lot to a friend of mine who's parents are both Irish(thick accents to boot) and he has a very Irish name. But he was born here in merry old Blighty and doesn't consider himself an Irishman because he was born here and has lived here his entire life.

Ethnicity and Nationality are addressing two different topics entirely. He may not consider himself to be an Irish national, yet his ethnic origin is still Irish regardless.

Take the UK for example, practically everyone who emigrates into this country from abroad immediately considers themselves to be "British national/citizen" even though they're not, their accents are a dead give-away, and more often than not, they can't speak a single word of English or Welsh.

I'd rather them just be honest about who they are and where they come from... but that's as unlikely as expecting pigs to fly at this stage.