As a matter of interest, how do you pronounce “Clwyd”?
I ask simply because I remember on an old episode of Catchphrase, (which at one time I used to (try to ) listen to when it was broadcast on Radio Wales on one of the old AM frequencies (and reception here in Lloegr was pretty mediocre), and the presenter (Basil Davies or Cennard Davies) said slightly grumpily that he got annoyed with people pronouncing “Clwyd” as “Cloo-wid” (bit like the way the name of Anne Clwyd, the politician, used to be pronounced by English speakers, and that it was a single (dipthong) sound, not two sounds.
(so I’ve always been a bit paranoid about pronouncing it right ever since then! ).
EDIT: Oh, that’s interesting. I didn’t realise “clwyd” was a noun, as well as a name (“hurdle”, apparently). Gweiadur has a sound sample, for those who have access to it:
EDIT2: Having said that, her pronunciation of the diphthong in “bwyd” is subtly different to my ears: