Church painter, a nineteenth century reformer (8)
I believe the answer is:
chartist
'a nineteenth century reformer' is the definition.
'chartist' can be an answer for 'reformer' (Chartist is an example). I'm not certain of the 'a nineteenth century' bit.
'church painter' is the wordplay.
'church' becomes 'ch' (abbreviation on maps etc).
'painter' becomes 'artist' (painter is an example).
'ch'+'artist'='CHARTIST'
Can you help me to learn more?
(Other definitions for chartist that I've seen before include "Victorian reformer" , "Stock-market specialist" , "English reformer" , "UK reform movement member" , "political reformer" .)