Irish names are routinely mispronounced in audiobooks if they have non-Irish narrators, but I would have thought the narrators could check with the author? I listened to one that absolutely murdered the name of the town Dun Laoghaire

He also pronounced Holyhead (the home of the Holyhead Harpies quidditch team) wrong - he pronounced it Holey-head, but the actual town is pronounced Holly-head

I listened to an audiobook where the narrator said the formula for sodium chloride is NaC1 (it is NaCl - the narrator obviously misread the L as a 1)