"Downton Abbey" daughter (5)
I believe the answer is:
edith
'downton abbey daughter' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for edith that I've seen before include "Cavell, Piaf or Wharton" , "- Cavell, WW 1 heroine" , "and 19 Across: 'Little Sparrow'" , "Woman" , "- - Piaf, singer" .)