Relation in Taunton (4)
I believe the answer is:
aunt
'relation' is the definition.
(aunt is a kind of relation)
'in taunton' is the wordplay.
'in' indicates the answer is hidden within the clue.
'AUNT' is hidden in the letters of 'taunton'.
(Other definitions for aunt that I've seen before include "Wife of one's uncle" , "Parent's sister" , "Tuna (anag.)" , "Put up with" , "Close relative" .)