Clergyman I found in church (8)
I believe the answer is:
minister
'clergyman' is the definition.
(I know that minister is a type of clergyman)
'i found in church' is the wordplay.
'found in' means one lot of letters goes inside another.
'church' becomes 'minster' (minster is a kind of church).
'i' placed inside 'minster' is 'MINISTER'.
(Other definitions for minister that I've seen before include "Form of address" , "Servant of state or church" , "Member of the clergy or of the Front Bench" , "supply as before" , "Senior politician" .)