The elder Trojans revised old farewell texts (4,4,7)

I believe the answer is:

dear john letters

'old farewell texts' is the definition.

'the elder trojans revised' is the wordplay.
'revised' is an anagram indicator.
'the'+'elder'+'trojans'='theeldertrojans'
'theeldertrojans' is an anagram of 'DEAR JOHN LETTERS'.

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.