Fruit one of five children brought to church (6)
I believe the answer is:
quince
'fruit' is the definition.
(quince is a kind of fruit)
'one of five children brought to church' is the wordplay.
'one of five children' becomes 'quin' (short for quintuplet).
'brought to' means one lot of letters go next to another.
'church' becomes 'ce' (abbreviation for Church of England).
'quin'+'ce'='QUINCE'
(Other definitions for quince that I've seen before include "Acid pear-shaped fruit used in preserves" , "sliced fruit for newly-weds" , "Acid-flavoured fruit" , "Peter -- (A Midsummer Night's Dream)" , "Chips" .)