Faithful companion of Aeneas in classical mythology (7)

I believe the answer is:

achates

(Other definitions for achates that I've seen before include "Intimate" , "Trusty companion" , "Companion of Aeneas (Virgil), at chase (anag.)" , "Aeneas's constant companion - loyal friend" , "Loyal supporter" .)

I've seen this clue in The Mirror.

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