There is no outlaw more legendary than Billy the Kid. Henry McCarty, better known under the pseudonyms of Billy the Kid and William H. Bonney, was a 19th-century gunman who participated in the Lincoln County War and became a frontier outlaw in the American Old West. No other historical figure from the Old West has stirred up more controversy and eluded historians and biographers than Billy the Kid alias William H. Bonney. This young man in his short life has established his place in history and legend.***8-27-21 The gun used to kill Billy the Kid has sold for $6 million – a world record auction price for a firearm.