Wine list, initiallly, that is right for king's supporter (8)
I believe the answer is:
cavalier
'supporter' is the definition.
(Cavalier is an example)
'wine list initiallly that is right for king's' is the wordplay.
I cannot really understand how this works, but
'wine' could be 'cava' (type of Spanish wine) and 'cava' is located in the answer.
'right' could be 'r' (common abbreviation) and 'r' is located in the answer.
'that is' could be 'ie' (abbreviation for id est, 'that is' in Latin) and 'ie' is found within the answer.
A single letter 'l' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for cavalier that I've seen before include "Horseman" , "Showing a lack of proper concern" , "... King Charles, canine breed" , "Knight" , "Casual" .)