Hero’s beloved name appearing in editorial (7)
I believe the answer is:
leander
'hero's beloved' is the definition.
(I've seen this in another clue)
'name appearing in editorial' is the wordplay.
'name' becomes 'n' (common abbreviation e.g. on forms).
'appearing in' is an insertion indicator.
'editorial' becomes 'leader' (both can mean a type of newspaper article).
'n' going inside 'leader' is 'LEANDER'.
(Other definitions for leander that I've seen before include "In Greek legend, lover of Hero who drowned in the Hellespont" , "Hero's mate" , "In Greek mythology, Hero's beloved who drowned in a lake" , "Ill-fated lover" , "In Greek myth, the lover of Hero" .)