Previously called (3)
I believe the answer is:
nee
'previously called' is the definition.
(French for 'born', used before a previous surname)
This is all the clue.
(Other definitions for nee that I've seen before include "Indicates the birth name of a married woman" , "Prefix denoting woman's name before marriage" , "Indicating the birth name of a married woman" , "Indicates the maiden name of a married woman" , "indicate old name" .)