Man puts on clothes with a conspirator... (3,6)
I believe the answer is:
guy fawkes
'a conspirator' is the definition.
(I've seen this before)
'man puts on clothes with' is the wordplay.
I cannot quite understand how this works, but
'man' could be 'guy' (guy is a kind of man) and 'guy' is located in the answer.
'with' could be 'w' (abbreviation) and 'w' is present in the answer.
'puts on' could be 'fakes' (I've seen this before) and 'fakes' is found in the leftover letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for guy fawkes that I've seen before include "His effigy is burned on Nov 5th in England" , "His effigy is burned on Nov 5 in England" , "assassin" , "Plotter against James I" , "17th-century conspirator" .)