You think Wales is difficult for people to place? Ha! When applying for an international call card by phone in the US, I had to give my home address. When I said "Northern Ireland" I was asked "is that the bit that's attached to England?". I thought about this for a few seconds, then decided it would be much easier if I agreed rather than discuss physical and metaphorical situations...

(I met loads of people who did know where it was, I might add!)