Film star to support brother in Cannes cast (6,7)
I believe the answer is:
pierce brosnan
'film star' is the definition.
I don't know anything about this answer so I can't tell whether this works.
'support brother in cannes cast' is the wordplay.
'support' becomes 'pier' (type of structure).
'brother' becomes 'bro' (short for brother).
'in' indicates putting letters inside.
'cast' indicates an anagram (letters are dispersed or cast around).
'cannes' is an anagram of 'cesnan'.
'bro' placed into 'cesnan' is 'cebrosnan'.
'pier'+'cebrosnan'='PIERCE BROSNAN'
'to' acts as a link.
Can you help me to learn more?
(Another definition for pierce brosnan that I've seen is " Last [JAMES BOND]".)