One found in folklore, a divinity (5)
I believe the answer is:
oread
'one' is the definition.
Both the definition and answer are singular nouns.
Maybe there's a link between them I don't understand?
'in folklore a divinity' is the wordplay.
'in' indicates the answer is hidden within the clue.
'OREAD' is hidden in the letters of 'folklore a divinity'.
'found' is the link.
(Other definitions for oread that I've seen before include "mountainous girl" , "being in range?" , "classically beautiful girl" , "Maid of the Mountains" , "spirit at peak?" .)