In Spanish port fine artist produced "The Spitfire" (6)
I believe the answer is:
virago
'the spitfire' is the definition.
(thesaurus)
'in spanish port fine artist' is the wordplay.
'in' is an insertion indicator.
'spanish port' becomes 'vigo' (port in Spain).
'fine artist' becomes 'ra' (Royal Academician, member of Royal Academy of Arts. I am not sure about the 'fine' bit.).
'vigo' placed around 'ra' is 'VIRAGO'.
'produced' is the link.
Can you help me to learn more?
(Other definitions for virago that I've seen before include "Strong and aggressive woman" , "Harridan" , "domineering female" , "Shrew - ill-tempered woman" , "Shrew, harpy" .)