Crossword Genius

Sean was mistaken in Abertawe (7)

Ross

I believe the answer is:

swansea

'abertawe' is the definition.
(I know that abertawe can be written as Swansea)

'sean was mistaken' is the wordplay.
'mistaken' indicates an anagram.
'sean'+'was'='seanwas'
'seanwas' is an anagram of 'SWANSEA'.

'in' acts as a link.

(Other definitions for swansea that I've seen before include "Welsh port" , "coastal location" , "Ecstasy, a win! (anag)" , "Birthplace of Dylan Thomas" , "South Wales city" .)

I've seen this clue in The Telegraph.
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