European bishop replaced by very unrefined individual (9)
I believe the answer is:
vulgarian
'unrefined individual' is the definition.
(I've seen this before)
I cannot understand how the remainder of the clue works.
(Other definitions for vulgarian that I've seen before include "upstart" , "One with ostentatious bad taste" , "boorish type" , "Unrefined individual" , "unpleasant sort" .)