Willy -, West German leader awarded the Nobel peace prize in 1971 (6)
I believe the answer is:
brandt
(Other definitions for brandt that I've seen before include "German politician" , "German statesman" , "former statesman" , "Willy ..., former West German chancellor" , "Willy -, W. German chancellor nineteen sixty nie to nineteen seventy four and Nobel Peace Prize winner" .)