Woman identified in ghastly diatribe (5)
I believe the answer is:
lydia
'woman' is the definition.
(woman's name)
'identified in ghastly diatribe' is the wordplay.
'identified in' indicates the answer is hidden within the clue.
'LYDIA' is hidden in the letters of 'ghastly diatribe'.
(Other definitions for lydia that I've seen before include "Old country" , "girl" , "Woman" , "Daily it's a girl's name" , "Girl's name - ancient kingdom in Asia Minor" .)