Crossword Genius

Clerical detective, relative to bishop, worn out (6,5)

Ross

I believe the answer is:

father brown

I'm a little stuck... Click here to teach me more about this clue!

'clerical detective' is the definition.
'father brown' can be an answer for 'detective' (I've seen this before). I am not sure about the 'clerical' bit.

'relative to bishop worn out' is the wordplay.
'relative' becomes 'father' (father is a kind of relative).
'to bishop' becomes 'b' (abbreviation used in chess).
'out' indicates an anagram (out can mean wrong or inaccurate).
'worn' anagrammed gives 'rown'.
'father'+'b'+'rown'='FATHER BROWN'

Can you help me to learn more?

(Other definitions for father brown that I've seen before include "G.K. Chesterton's detective character" , "famous solver" , "Chesterton character" , "10 [SLEUTH]" .)

I've seen this clue in The Mirror.
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