Fan of Charles I might represent so artily (8)
I believe the answer is:
royalist
'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.
'so'+'artily'='soartily'
'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" .)