Thmyl Lbt Jyms Bwnd Llandrwyd Mn Mydya Fayr Now

Maybe the cipher is: each letter shifted by -1, but with vowels shifted differently? Unlikely.

Better: Try (common in puzzles):

thmyl — try: th→the? myl → my ? The y as vowel. Reverse each word: thmyl lbt jyms bwnd llandrwyd mn mydya fayr

qejvi — nonsense.

Test thmyl : t h m y l → t h m e l or t h m i l → ‘themil’ or ‘thimil’ — not a word. But thmyl could be ‘the mill’? the mill → t h e m i l l → thmyll (but we have thmyl — missing an l). Maybe the cipher is: each letter shifted by

thmyl → guzly — no.

lbt — ‘lbt’ = ‘lob it’? unlikely. jyms — ‘jyms’ = ‘gyms’? (j=g?). bwnd — ‘bwnd’ = ‘beyond’? (bwnd → b w n d, add e o? ‘beyond’ has 6 letters). Actually, let’s test Caesar cipher with shift of +1 (a→b) but backwards? No, systematic: myl → my