Member of the clergy I located in large church (8)
I believe the answer is:
minister
'member of the clergy' is the definition.
(a church minister)
'i located in large church' is the wordplay.
'located in' is an insertion indicator.
'large church' becomes 'minster' (I've seen this before).
'i' placed within 'minster' is 'MINISTER'.
(Other definitions for minister that I've seen before include "Clergyman - politician" , "Churchman" , "Servant of state or church" , "Attend to priest" , "Cabinet member" .)