Penning front part, I prepare the ground for story (7)
I believe the answer is:
ivanhoe
'for story' is the definition.
(Walter Scott novel)
'penning front part i prepare the ground' is the wordplay.
'penning' is an insertion indicator.
'front part' becomes 'van' (van can mean the front of something).
'prepare the ground' becomes 'hoe' (use a hoe in a garden).
'i'+'hoe'='ihoe'
'van' going into 'ihoe' is 'IVANHOE'.
(Other definitions for ivanhoe that I've seen before include "Sir Walter Scott novel" , "Book by Sir Walter Scott" , "Literary hero" , "I have no collection for Walter Scott's famous novel" , "Scott's Crusading hero" .)