Person responsible for an artist being in court, possibly (7)
I believe the answer is:
curator
'person' is the definition.
(curator is a kind of person)
'an artist being in court possibly' is the wordplay.
'an artist' becomes 'ra' (Royal Academician, member of Royal Academy of Arts).
'being in' indicates putting letters inside.
'possibly' is an anagram indicator.
'court' is an anagram of 'cutor'.
'ra' going into 'cutor' is 'CURATOR'.
'responsible for' acts as a link.
(Other definitions for curator that I've seen before include "Cultural employee" , "Person in charge of a museum" , "Artistic director" , "Custodian of a collection" , "museum boss" .)