Perchance story describing forefather (8)
I believe the answer is:
ancestor
'forefather' is the definition.
(I've seen this before)
'perchance story describing' is the wordplay.
'describing' indicates the answer is hidden within the clue (describe can mean to go around).
'ANCESTOR' is hidden in the letters of 'perchance story'.
(Other definitions for ancestor that I've seen before include "One of one's forebears" , "Antecedent, forebear" , "not being of the modern generation" , "Old member of the family -no traces (anag)" , "one is up a tree" .)