Fair representation of Buendias (8)
I believe the answer is:
unbiased
'fair' is the definition.
('unbiased' can be similar in meaning to 'fair')
'representation of buendias' is the wordplay.
'representation of' indicates an anagram (I've seen this in other clues).
'buendias' anagrammed gives 'UNBIASED'.
(Other definitions for unbiased that I've seen before include "fair" , "without taking sides" , "Impartial" , "Not prejudiced or partisan" , "without side" .)