Kid Curry

Front row left to right: Harry A. Longabaugh, alias the Sundance Kid, Ben Kilpatrick, alias the Tall Texan, Robert Leroy Parker, alias Butch Cassidy; Standing: Will Carver & Harvey Logan, alias Kid Curry; Fort Worth, Texas, 1900.

(Wikipedia) Harvey Alexander Logan (1867 - June 17, 1904), also known as Kid Curry, was an American outlaw and gunman who rode with Butch Cassidy and the Sundance Kid's infamous Wild Bunch gang. Despite being less well known than his counterparts, he has since been referred to as "the wildest of the Wild Bunch."
... He started riding with outlaw "Black Jack" Ketchum. Pinkerton detectives began trailing Curry shortly after his departure from Montana. In January 1896, Curry received word that an old friend of Landusky's, rancher James Winters, had been spying on him, for the reward offered in his arrest. Curry and two of his brothers, Johnny and Lonny, went to Winters' ranch to confront him. However, a shootout erupted. Johnny was killed, while Curry and Lonny escaped. Shortly after, Curry and Lonny argued with Black Jack Ketchum over the take in a train robbery. The two brothers left the gang and joined the circus. Continued