Long article about Astyanax's origin, Greek in Homer (7)

I haven't cracked this one yet — but the brilliant team at Times for the Times have:

ACHE (long) + AN (article) containing [about] A{styanax’s [origin].  Greek stuff in abundance.  I got to the answer by following the  wordplay but without having any idea what the rest of the clue was about . My AI assistant informs me that in Homer’s works, the term “Achaean” is used to refer to the Greeks collectively who besieged Troy. Astyanax was the son of Hector, Crown Prince of Troy.