Clive —, Best Actor in a Supporting Role Oscar nominee for Closer (4)
I believe the answer is:
owen
(Other definitions for owen that I've seen before include "Wilfred - - , WW1 poet" , "Welsh industrialist and social reformer, founder of cooperative communities, d. 1858" , "Welsh boy's name" , "Former SDP leader" , "Clive --, English actor" .)