who is the latter lawman?
He was an Old West lawman and gambler in Arizona, and a deputy marshal in Tombstone.
Wyatt Earp
Wyatt Berry Stapp Earp (March 19, 1848 – January 13, 1929) was an Old West lawman and gambler in Cochise County, Arizona Territory, and a deputy marshal in Tombstone. He worked in a wide variety of trades throughout his life and took part in the famous gunfight at the O.K. Corral, during which lawmen killed three outlaw Cochise County Cowboys. 
who has the fastest hands in the west UNANSWERABLE what is the origin behind the term gunfighter? The term "gun slinger" was used in the Western film "Drag Harlan" in 1920 and was soon adopted by other Western writers. Gunslinger and Gunfighter are words used in a similar sense. are there any gunslingers in the modern world? Yes, but as participants in organized competitive sports like action shooting events, harking back to the Wild West. what are the usage of such fighters? Being hired for contract killings or at a ranch embroiled in a range war where they would earn "fighting wages". Some were bandits or outlaws, while others were lawmen. who are the lawmen for such fighters? Pat Garrett and Wyatt Earp to name two of them
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Wyatt Earp [SEP] Introduction
Wyatt Berry Stapp Earp (March 19, 1848 – January 13, 1929) was an Old West lawman and gambler in Cochise County, Arizona Territory, and a deputy marshal in Tombstone. He worked in a wide variety of trades throughout his life and took part in the famous gunfight at the O.K. Corral, during which lawmen killed three outlaw Cochise County Cowboys. He is often erroneously regarded as the central figure in the shootout, although his brother Virgil was the Tombstone City "and" Deputy U.S. Marshal that day, and had far more experience in combat as a sheriff, constable, marshal, and soldier.