Story and information about parent, vassal (8)
I believe the answer is:
liegeman
'vassal' is the definition.
(I know that vassal can be written as liegeman)
'story and information about parent' is the wordplay.
'story' becomes 'lie' (story can mean a fabrication).
'and' says to put letters next to each other.
'information' becomes 'gen' (gen can informally mean information).
'about' means one lot of letters goes inside another.
'parent' becomes 'ma' (ma can mean mum or mother).
'gen' enclosing 'ma' is 'geman'.
'lie'+'geman'='LIEGEMAN'
(Other definitions for liegeman that I've seen before include "Loyal follower" , "A loyal person" , "Person serving lord" , "Vassal, subject" .)