Originally called in one editor (3)
I believe the answer is:
nee
'originally called' is the definition.
(written before eg a maiden name)
'in one editor' is the wordplay.
'in' says the answer is hidden in the clue.
'NEE' can be found hidden inside 'one editor'.
(Other definitions for nee that I've seen before include "Prefix denoting woman's name before marriage" , "Prefix denoting woman's unmarried name" , "Indicates the maiden name of a married woman" , "Used to indicate the maiden name of a married woman" , "named as 14 [FIANCEE] ?" .)