Relating to predecessors of clean star, possibly (9)
I believe the answer is:
ancestral
'relating to predecessors' is the definition.
I can't tell whether this defines the answer.
'clean star possibly' is the wordplay.
'possibly' indicates an anagram.
'clean'+'star'='cleanstar'
'cleanstar' is an anagram of 'ANCESTRAL'.
'of' is the link.
Can you help me to learn more?
(Other definitions for ancestral that I've seen before include "Coming down the line" , "by old relations" , "inherited from forebears" , "Belonging to the house" , "Like many an old family home" .)