Alun —, British screenwriter whose works include 1964 comedy A Hard Day's Night (4)
I believe the answer is:
owen
(Other definitions for owen that I've seen before include "Clive --, English actor" , "Former SDP leader" , "Wilfred - - , WWI poet" , "Wilfred -, English poet killed in World War One" , "'E won over the Welshman" .)