Poe's a weird story teller (5)
I believe the answer is:
aesop
'story teller' is the definition.
(I've seen this in another clue)
'poe's a weird' is the wordplay.
'weird' indicates anagramming the letters.
'poes'+'a'='poesa'
'poesa' anagrammed gives 'AESOP'.
(Other definitions for aesop that I've seen before include "he wrote in Greek" , "Greek fable writer" , "Greek author, famous for his fables" , "very old writer" , "Ancient Greek author of moral tales" .)