^^ Nationality is where you are BORN.. Also where you emmigrate to - but even then, you're still the nationality of where you are born.
If you wanna get into the whole 3/8ths welsh thing, then most European people are about 90%+ African, seeing as how we all came from the jungles of Africa a couple of million years ago.
Except there were native Americans - so that's the "90%".
If you're born in wales - unfortunately you're Welsh
, if in Scotland, you're a drunk ginger b**, and if in England, you're a violent, football loving hooliganistic, drunken b**.