Alexander Walker II was a master blender like his father and his grandfather before him, who devoted his life to making exceptional whiskies. In 1920, he received a knighthood from King George V for his services to the nation. John Walker & Sons XR 21 was created to honour this very special occasion. Inspired by Sir Alexander’s own hand-written notes, it is blended from the exclusive Johnnie Walker reserve of rare whiskies, all of which have been matured for a full 21 years.