Brooke, rugby union forward? (6)
I believe the answer is:
rupert
'brooke' is the definition.
(I know that brooke given name Rupert)
'rugby union forward?' is the wordplay.
'rugby union' becomes 'RU'.
'forward?' becomes 'pert' (I've seen this in another clue).
'ru'+'pert'='RUPERT'
(Other definitions for rupert that I've seen before include "Mary Tourtel's bear" , "chap" , "Comic strip bear" , "Poet who wrote of ..." , "Prince" .)