Personification of peace, in myth (5)
I believe the answer is:
irene
'personification of peace in myth' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for irene that I've seen before include "One can find a girl in Ree" , "woman" , "- - Worth, actress" , "Girl's name; Soames Forsyte's first wife" , "Girl of peace" .)