French art, for example, is subject ultimately for writer (8)
I believe the answer is:
essayist
'writer' is the definition.
(essayist is a kind of writer)
'french art for example is subject ultimately' is the wordplay.
'french art' becomes 'es' ('is' in French - 'art' can mean 'is' eg 'thou art').
'for example' becomes 'say' (I've seen this before).
'ultimately' says to take the final letters.
The final letter of 'subject' is 't'.
'es'+'say'+'is'+'t'='ESSAYIST'
'for' acts as a link.
(Other definitions for essayist that I've seen before include "Bacon maybe" , "I write" , "Writer of pieces on various subjects" , "Writer (e.g. Lamb)" , "One who writes short pieces on given subject" .)