Fan of Charles I might represent so artily (8)
I believe the answer is:
'fan of charles i might' is the definition.
I can't judge whether this defines the answer.
'represent so artily' is the wordplay.
'represent' indicates anagramming the letters.
'soartily' with letters rearranged gives 'ROYALIST'.
Can you help me to learn more?
(Other definitions for royalist that I've seen before include "Solitary kind of person who favours monarchy" , "Supporter of monarchy" , "Solitary (anag.)" , "Civil War Cavalier" , "Civil War participant" .)