County did deny W. Grace over catches (7)
I believe the answer is:
gwynedd
'county' is the definition.
(I've seen this before)
'did deny w grace over catches' is the wordplay.
'catches' indicates the answer is hidden within the clue (the answer is caught in the clue).
'over' shows that the letters should be reversed in order.
'ddenywg' is hidden in the letters of 'did deny w grace'.
'ddenywg' back-to-front is 'GWYNEDD'.
(Other definitions for gwynedd that I've seen before include "Bangor's county" , "Area of north-west Wales" , "County of north-west Wales" , "Welsh county" .)