Riley (better known as Doc Middleton and also known as David C.
Middleton, Texas Jack, Jack Lyons, Gold-Tooth Jack and Gold-Tooth Charley) (February 9, 1851 – December 29, 1913) was an outlaw and horse thief, whose exploits of stealing perhaps 2,000 horses over a two-year period earned a spot in the Wild West Show.
Riley was born in Bastrop, Texas.