Translation:Mae e'n meddwl fod e'n fodel, y Mr Lingo 'na.
So it's okay to mix "e'n" and "o'n" in the same sentence? I thought one might be used more in the north & the other in the south. No access to notes on my phone app
You can mix them, but it sounds strange - better to stick with one or the other.
A mixture will no longer appear as a prompt for this sentence.