A pre-Raphaelite pledged to resist change (8)
I believe the answer is:
rossetti
'a pre-raphaelite pledged' is the definition.
I can't judge whether this defines the answer.
'to resist change' is the wordplay.
'change' indicates anagramming the letters.
'to'+'resist'='toresist'
'toresist' is an anagram of 'ROSSETTI'.
Can you help me to learn more?
(Other definitions for rossetti that I've seen before include "One of three poetic siblings" , "Artist" , "She wroteBleak Midwinter" , "Christina -, nineteenth century century English poet" , "English Pre-Raphaelite poet and painter, d. 1882" .)