[mas-ter-suh
n, mah-ster-] 
| William Barclay (“Bat”), 1853–1921, U.S. frontier law officer. |
| Mas·ter·son (mās'tər-sən) American frontier marshal and journalist. Famed for his exploits as an army scout, gambler, and law enforcer in towns such as Dodge City and Tombstone, he was later a sports writer for the New York Morning Telegraph (1902-1921). |