Turkish officer, Priam's nephew and Electra's father (9)
I believe the answer is:
agamemnon
'electra's father' is the definition.
I can't judge whether this defines the answer.
'turkish officer priam's nephew' is the wordplay.
'turkish officer' becomes 'aga' (military commander eg in the Ottoman Empire).
'priam's nephew' becomes 'memnon' (I can't explain this - if you can you should give a lot more credence to this answer).
'aga'+'memnon'='AGAMEMNON'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for agamemnon that I've seen before include "Fabled king soon" , "Gk. leader against Troy" , "Greek hero, king of Mycenae" , "Greek commander against Troy" , "mythological king" .)