One of King Lear's daughters (5)
I believe the answer is:
regan
'one of king lear's daughters' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for regan that I've seen before include "king's daughter" , "daughter in play" , "Work team" , "daughter seeking power" , "Daughter of King Lear" .)