Edward upset father's wishes (7)
I believe the answer is:
desires
'wishes' is the definition.
(desiring is a kind of wishing)
'edward upset father's' is the wordplay.
'edward' becomes 'Ed' (short for Edward).
'upset' says the letters should be written backwards.
'father's' becomes 'sire's' ('sire' can be a synonym of 'father').
'ed' backwards is 'de'.
'de'+'sires'='DESIRES'
(Other definitions for desires that I've seen before include "Covets and yearns for" , "Wants (7)." , "needs" , "Wishes" , "Hopes" .)