Story King extracted from some European subject (8)
I believe the answer is:
liegeman
'subject' is the definition.
(historical subject of a lord)
'story king extracted from some european' is the wordplay.
I cannot really understand how this works, but
'story' could be 'lie' (story can mean a fabrication) and 'lie' is found in the answer.
'from' could be 'e' (I've seen this in other clues) and 'e' is found in the answer.
'some' could be 'a' and 'a' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for liegeman that I've seen before include "Person serving lord" , "Vassal, subject" , "Loyal follower" , "A loyal person" .)