Crossword Genius

Release a fellow of one's own volition (4,4)

Ross

I believe the answer is:

free will

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

'own volition' is the definition.
'free will' can be an answer for 'volition' (I've seen this before). I'm unsure of the 'own' bit.

'release a fellow of one's' is the wordplay.
'release' becomes 'free' (synonyms).
'a fellow of one' becomes 'will' (I can't justify this - if you can you should believe this answer much more).
'free'+'will'='FREE-WILL'

Can you help me to learn more?

(Other definitions for free will that I've seen before include "ability to act without direction" , "discretion" , "Volition" , "Freedom of choice" , "autonomy" .)

I've seen this clue in the Evening Standard.
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