The Tafarn Bach was down as closed - have marked for reopening but there are also a couple of corrections:

Its full name is Tafarn Bach - Castell Howell Arms to give it Welsh and English forms.

The address/village is rather more complex however as it is listed as Pontsian, Pontshaen or both depending where you look. So far as I can make out, Pontshaen was an old form. Anyway, as the Ordnance Survey, Google, road signs and the pub itself now call it Pontsian I think we should probably follow suit.