Father has upset the governor (5)
I believe the answer is:
pasha
'governor' is the definition.
(I've seen this before)
'father has upset' is the wordplay.
'father' becomes 'pa' (pa can mean dad or father).
'upset' is an anagram indicator.
'has' anagrammed gives 'sha'.
'pa'+'sha'='PASHA'
'the' acts as a link.
(Other definitions for pasha that I've seen before include "Turkish high-ranker" , "foreign officer" , "High-ranking Turk" , "Civil or military authority in Turkey or Egypt" , "Ottoman governor" .)