Brad of "Seven Years in Tibet" (4)
I believe the answer is:
pitt
'brad of seven years in tibet' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for pitt that I've seen before include "Elder and Younger PMs" , "a name in politics once" , "One of two Tory prime ministers" , "William --, early PM" , "William --, who became Prime Minister at 24" .)