Princess has returned from Vienna (4)
I believe the answer is:
anne
'princess' is the definition.
(Princess Anne, daughter of Queen Elizabeth)
'returned from vienna' is the wordplay.
I cannot quite understand how this works, but
'from' could be 'e' (I've seen this in other clues) and 'e' is present in the answer.
The remaining letters 'ann' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'has' acts as a link.
Can you help me to learn more?
(Other definitions for anne that I've seen before include "Queen's name" , "English queen" , "First queen of Great Britain and Ireland" , "Second or fourth wife of Henry VIII" , "One of the Bronte' tens" .)