Some male Christian name (4)
I believe the answer is:
alec
'name' is the definition.
(man's name)
'some male christian' is the wordplay.
'some' says the answer is hidden in the clue (some parts of the word are used).
'ALEC' is hidden within 'male christian'.
(Other definitions for alec that I've seen before include "Actor Guinness is smart" , "Smart man?" , "Sir -- Guinness, actor" , "Smart chap" , "Boy's name (a smart one?)" .)