Antigone's father (7)
I believe the answer is:
oedipus
'antigone's father' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for oedipus that I've seen before include "King of Thebes who married his mother" , "Mythological patricide" , "Theban king of legend" , "Sort of complex" , "who had parental problems" .)