Francis Marion McMahon (18??-1940) – Served in Company D of the Texas Rangers under John Reynolds Hughes in September 1893 and arrested Bass Outlaw on April 4, 1894. He later served as a U.S. Deputy Marshal.
Leander H. McNelly (1844–1877) – A Texas lawman, McNelly was commissioned as captain of the state police on July 1, 1870, and commanded the “Special Ranger Force” in 1874 which patrolled the Mexico border. He died on September 4, 1877.
John McPherson (18??-1879) – McPherson served as the Police Chief in Las Vegas, New Mexico until the Dodge City Gang showed up and wanted to take control of the town. The leader of the gang, a man who went by the name of Hoodoo Brown, soon got himself installed as the mayor and Justice of the Peace and had McPherson sacked. But that wasn’t enough for Brown, who sent a man named Charles “Slick” Karl to engage McPherson in a gunfight in order to get rid of the man permanently. On August 6, 1879, the gunfight occurred and McPherson was killed and Kyle wounded.
Joseph Lafayette Meek (1810-1875) – Born in Washington County, Virginia on February 7, 1810, Meek was propelled westward at an early age by a disagreeable stepmother. He first went to Lexington, Missouri where he joined two of his brothers. By 1829 he had signed on with William Sublette as a Rocky Mountain trapper, and for the next eleven years, he lived the strenuous life of a mountain man. By 1840, the trapping industry was waning and Meek, along with his third Indian wife, traveled to the Willamette Valley in Oregon. He worked first for various farmers before becoming the sheriff. By 1845 he was a prosperous farmer himself and won a seat in the Legislature. Following the Whitman Massacre in November of 1847, Meek led a delegation across to Washington, D. C., asking for protection and to urge territorial status for Oregon. The following year, Congress approved his requests and Meek was appointed the territory’s federal marshal, a post he held for the next five years. In 1855, he played a leading part in the Yakima War, organizing the Oregon Volunteers and winning the rank of major for his service. In June of 1875, Joe died at his home.
Hod Miles – An outlaw turned deputy sheriff, who in January 1888, killed Jake Gibson, who was allegedly his fifth victim.
F.M. Miller – Female U.S. Deputy Marshal. Commissioned out of the federal court at Paris, Texas, she was the only female deputy working in the Indian Territory in 1891. Known to always wear a cowboy hat and adorned with a gun belt filled with cartridges and a Colt pistol, she had a reputation as a fearless and efficient officer who locked numerous outlaws.
James B. Miller, aka: Killin’ Jim, Killer Miller, Jim the Killer, Deacon Miller (1866-1909) – Killing his first man when he just 18, Miller became a hired gun in the 1880s, a “career” he would continue for the next two decades. He served as an occasional lawman in Pecos, Texas. He killed Sheriff Bud Frazer and was suspected of forty other killings including Pat Garrett and A.A. Bobbitt. On April 19, 1909, he was hanged by vigilantes in Ada, Oklahoma.
Alexander Hamilton Mills (1837-1882) – Known as a “crack-shot,” Mills was the sheriff Lincoln County, New Mexico during the Horrell War. He later got into trouble on an embezzling charge and manslaughter charges in 1875. He was killed by Mexicans in 1882.
Jeff Davis Milton (1861-1947) – Milton was an Old West lawman who served for more than 50 years.
David Montgomery – Serving as Chief Deputy Marshal of Lincoln County, New Mexico in 1878.
John “Happy Jack” Morco – A semiliterate and a drunken brawler in California, Morco fled the state after killing four unarmed men. He next turned up in Ellsworth, Kansas. Exaggerating that he had killed 12 men in gunfights, he soon was appointed to the police force to help control the rowdy cowtown. There, he got into a quarrel with gunman Ben Thompson which led to the death of Sheriff C. B. Whitney. Afterward, Morco was fired. Morco was later killed in a gunfight with Ellsworth Policeman J. C. Brown.
Joe Morgan – A gunman and lawman, he fought Deputy Sheriff Ben Williams in Las Cruces, New Mexico on September 15, 1895, with Albert Fall. He was later a deputy sheriff and Oliver Lee supporter.
Jeff B. Moore – A cowboy, mercenary and lawmen, he fought Indians in Argentina before he served several terms as sheriff of Crockett County, Texas.
Joe Morgan – A gunman and lawman, he was in a gunfight with Ben Williams in Las Cruces, New Mexico on September 15, 1895. Both he and Williams were wounded.
W.T. “Brack” Morris (18??-1901) – Served in Company D of the Texas Ranger in 1882 and was sheriff of Kames County, Texas, when he was killed on June 13, 1901.
Alexander L. Morrison, Jr. – Served as chief deputy to his father in Santa Fe County, New Mexico.
Alexander L. Morrison, Sr. – Appointed marshal of Santa Fe, New Mexico in March 1882.
Harry N. Morse (1835–1912) – From New York, Morse made his way to California with the rest of the miners during the California Gold Rush. When he didn’t find his fortune, he turned to other jobs. In 1863 he was elected Sheriff of Alameda County, where he quickly earned a reputation as a determined manhunter. Among the many outlaws he captured, was the notorious Tiburcio Vasquez in 1871. In 1878, he retired as sheriff and soon founded a detective agency in San Francisco. In 1883, his agency was responsible for the arrest of the elusive stage robber Black Bart. Diverting his business interests in real estate, publishing, and mining, he was very successful. He died peacefully in Oakland, California at the age of seventy-six.
George W. Mowbray – Worked as a posseman under Heck Thomas, Bill Tilghman, and Chris Madsen in the early 1890s and was later appointed as a U.S. Deputy Marshal himself. Over the years, he fought the Cook gang, the Doolin Gang, the Buck Gang, and Cherokee Bill’s gang.
By Kathy Weiser-Alexander, updated February 2020.