Wilfred —, poet whose works include Dulce et Decorum Est and Anthem for Doomed Youth (4)
I believe the answer is:
owen
(Other definitions for owen that I've seen before include "Former SDP leader" , "Wilfred -, English poet killed in World War One" , "Welsh boy's name" , "Wilfred - - , WW1 poet" , "English war poet, killed 1918" .)