Star once involved with old family member (8)
I believe the answer is:
'family member' is the definition.
(I know that family member can be written as ancestor)
'star once involved' is the wordplay.
'involved' indicates an anagram (involved can mean confusing or complex).
'staronce' anagrammed gives 'ANCESTOR'.
'with old' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for ancestor that I've seen before include "Person from whom one is descended" , "An escort (anag.)" , "Enactors (anag)" , "Old member of the family -no traces (anag)" , "Adam was our first one" .)