Churchman and another holding firm (6)
I believe the answer is:
'churchman' is the definition.
(I've seen this before)
'another holding firm' is the wordplay.
'another' becomes 'dean' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'holding' indicates putting letters inside.
'firm' becomes 'co' (a firm is a company).
'dean' enclosing 'co' is 'DEACON'.
'and' is the link.
Can you help me to learn more?
(Other definitions for deacon that I've seen before include "Church minister" , "An ordained minister" , "Priest's assistant" , "A member of the lower orders of clergy" , "Cleric - canoed (anag)" .)