| Name, Place, or Title |
Born |
Died |
Noted |
| MacIntosh, A.N. (Victim) | - | - | 33 |
| Mackenna's Gold (M) 1969 | | | 35 |
| Mackenzie, Donald (Explorer, Fur Trade Pioneer) | | | 03, 24 |
| Mackenzie, General Ranald Slidell (U.S. Army - Civil War; Indian Wars) "Bad Hand" | 30 | 03 | 03, 08, 30, 39, 47 |
| Madden, Bill | - | - | 48 |
| Madison, Guy | - | - | 07 |
| Madness of Bald Eagle (Novel) | - | - | 02 |
| Madsen, Chris (Deputy Marshal) | - | - | 14, 48 |
| Madsen, Michael (Movie Actor) | - | - | 0 |
| Magnificant Seven (M) 1967 | - | - | 35 |
| Magnuson Act (Chinese Exclusion Act Repeal) | | | 18 |
| Mahoney, Jack (aka: Jacques, Jock or Jack O'Mahoney or Mahomey) [Stuntman] TYH! | 7 | 50 | 07, 50 |
| Major Adams- Trailmaster (see:Wagon Train, TV) | | | 0 |
| Major Crimes Act of 1885 | | | 31 |
| Major Dundee (M) 1965 | - | - | 40, 52 |
| Majors, Alexander (Pony Express Founder) | 40 | - | 40 |
| Making the Gather (TX) | - | - | 50 |
| Maleaska: The Indian Wife of the White Hunter (Dime Novel) | - | - | 23 |
| Maledon, George (Hangman, Ft. Smith | | | 23 |
| Mallen, Perry M. (Phony Dectective, Conman) | - | - | 20 |
| Maloy, May (Dance Hall owner) | | | 04 |
| Malvern, George | - | - | 0 |
| Man of the Forest (193?) | | | 17 |
| Man Who Rode Midnight, The (Novel) 1988 | | | 34 |
| Man Who Shot Liberty Valance, The (M) 1962 | - | - | 07, 24, 35 |
| Man with No Name Trilogy (M) | - | - | 18 |
| Man Without a Star (M) 1955 | - | - | 34, 50 |
| Man-Who-Always-Kept-His-Word (see: Harney, William S.) | | | 19 |
| Mangas Coloradas (Apache Chief) | - | 03 | 03, 25 |
| Manifest Destiny | - | - | 15 |
| Manitou (Horse) | - | - | 01 |
| Mankato Mass Hanging (1862) | | | 52 |
| Manning, "Doc" (Gunfighter) | - | - | 38 |
| Manning, Frank | - | - | 38 |
| Manning, James "Jim" | - | - | 38 |
| Mann, Jim | - | 34 | 34 |
| Mansfield, William | - | 39 | 39 |
| Man, John | - | - | 47 |
| Maples, Dan (Deputy U.S. Marshal) | | | 18 |
| Marcus, Josephine Sarah "Josie" (T, Dancer) | - | - | 23, 51 |
| Marias Massacre (MT) Piegan Blackfoot Indians | | | 04, 33 |
| Marion Hedgepath Gang (Train Robbers) | | | 47 |
| Mark Twain (Samuel Clements) Author, Humorist, Social Commentator) | 48 | 16 | 07, 16, 18, 31, 32, 33, 46, 48, 51 |
| Marland, Ernest Whitworth "E.W." (OK oilman) | | | 16, 19, 40 |
| Marlin Model 1881 Lever Action Rifle | | | 0 |
| Marlin, John (Gunsmitth) | | | 0 |
| Marlow, Alfred (Victim) {TL} | - | 03 | 03, 04, 51 |
| Marlow, Boone (Victim) {TL} | - | 04 | 03, 04, 51 |
| Marlow, Charles (lawman) {TL} | | | 03, 51 |
| Marlow, George (lawman) {TL} | | | 03, 51 |
| Marlow, LLewellyn (Victim) {TL} | - | 03 | 03, 04, 51 |
| Marshal of Cripple Creek (M) 1947 | - | - | 43 |
| Marshal of Windy Hollow, The (M) 1972 | - | - | 12 |
| Marshal) | | | 01, 21, 28, 29, 31, 40 |
| Marshall, James W. (Prospector) 1848 | | | 04 |
| Marsh, Othneil Charles (Paleontologist) Bone Hunter | - | 11 | 11, 15 |
| Martinez, Juan (Sherrif- Lincoln County, NM) | | | 48 |
| Martin, Henry (Horse Thief) | | | 16 |
| Martin, Jim | - | 34 | 34 |
| Martin, R.A.C. (Bank Clerk) Victim | | | 17 |
| Martin, Richard "Chito" (Movie Actor, Sidekick) | 50 | - | 36, 50 |
| Marvel Comics | - | - | 20 |
| Marvin, Lee (Movie & TV Star) | 8 | 35 | 08, 35, 38 |
| Masked Raiders (M) 1949 | - | - | 36 |
| Mason County War, The (TX) "The Hoodoo War" | - | - | 36 |
| Mason/Henry Gang (Souther California) | - | - | 22 |
| Mason, Charlie (Cowboy Explorer)) | | | 51 |
| Massacre Canyon, NE | | | 31, 0 |
| Masterson, Edward J. "Ed" (City Marshal, Dodge City, KS) | 38 | 19 | 15, 20, 38, 39 |
| Masterson, James P. "Jim" (Lawman) | - | 13 | 02, 06, 13, 15, 16, 30, 35 |
| Masterson, William Barclay "Bat" (Lawman, Gunfighter) | 48 | 43 | 02, 03, 04, 07, 08, 15, 16, 20, 22, 25, 26, 29, 31, 38, 39, 40, 43, 48 |
| Mast, Milt (Sheriff | | | 23 |
| Matchlees, The (a Silver Mine) | | | 15 |
| Mather, "Mysterious Dave" (Shootist) | - | - | 04, 19, 29, 39 |
| Mather, Josiah | - | - | 19 |
| Matt Dillon (FC, Marshal of Dodge City, KS) | | | 17, 21, 37 |
| Matthews, Billy | - | - | 13 |
| Maun, J.D. (Lt., U.S. Army) | | | 52 |
| Maureen (O'Hara, Maureen) | | | 0 |
| Maximilian, Joseph Ferdinand (Emperor of Mexico) | - | - | 21, 25 |
| Maxwell Land Grant (NM) | - | - | 02, 30, 37 |
| Maxwell, Lucian Bonaparte (NM Rancher) | 36 | 30 | 06, 30, 36 |
| Maxwell, Pete (rancher) | | | 28 |
| Mayberry Hotel Massacre, The (1880's) | - | - | 0 |
| Mayfield, John | - | 49 | 49 |
| Maynard Tape Primer System (Firearms) | | | 18 |
| Maynard, Edward (Dentist, Firearms Designer) | 17 | 18 | 17, 18 |
| Maynard, Frank H. (Poet, Author) | 50 | 9 | 09, 15, 50 |
| Maynard, Kenneth Olin "Ken" (Movie Star) | 29 | 12 | 12, 29, 34 |
| May, Karl | - | - | 0 |
| McCain, Charles R. | - | 4 | 49 |
| McCall, "Broken Nose" Jack (Murdered Wild Bill Hickok) Deadwood) | - | - | 01, 31, 38, 46, 49 |
| McCanles Gang (Outlaws) | - | - | 0 |
| McCanles Massacre, The (Nebraska Territory) | - | - | 28 |
| McCanles, David C. | - | 28 | 28 |
| McCann, Marion | - | - | 29 |
| McCarty, ?? (drunk Cowboy) | | | 48 |
| McCarty, Henry (see: Billy the Kid) | | | 0 |
| McCloskey, William | - | 10 | 10 |
| McCloud, Jim (Jailbird) | - | - | 32 |
| McClure, Charlie (Victim) | | | 34 |
| McClure, Park | - | - | 42 |
| McCluskie, Mike (LCW) | - | - | 34 |
| McConnell, Andrew (Bad Neighbor) | - | - | 43, 44 |
| McCormick, Richard (Newspaperman) | | | 42 |
| McCowan, Samuel M. (Indian Educator, Anthropologist) | - | - | 22 |
| McCoy, Tim (Movie Star) | - | - | 42 |
| McCreary, Donna (Witness) | | | 40 |
| McCrea, Joel Albert (Movie Star) | 47 | 42 | 09, 33, 42, 47, 49 |
| McCubbin, Bob (part owner True West Magazine | - | - | 42 |
| McCullough, John (Postmaster, Deputy Sheriff) | - | - | 39 |
| McDaniels, Thompson | - | - | 03 |
| McDonald, Frank | - | - | 23 |
| McDoulet, "Cattle Annie" (Doolin Gang Lookout) | | | 0 |
| McDowell, John “Three Fingered Jack” (HFG) | - | 6 | 06 |
| McGinnis, William (see: Lay, "Elzy") | | | 0 |
| McGinty (Petrified Man) | - | - | 23 |
| McGivern, Edward "Ed" (Exhibtion Shooter) | 42 | - | 42, 50 |
| McGrath, Frank (TV Actor) | - | - | 38 |
| McGraw, M.B. (Deputy Sheriff) | - | 33 | 33 |
| McIntire, John (TV Actor) | 26 | 5 | 05, 26, 38 |
| McIntyre, Charles (Lynched) | | | 22 |
| McIntyre, Christine (Movie Actress) | - | - | 0 |
| McKee, Thomas M. (Photographer) | - | - | 0 |
| McKidrict, Joe (Texas Ranger) | - | 14 | 14 |
| McKim, Sammy (TV Actor) | - | - | 0 |
| McKinley, William (25th U.S. President) | - | - | 09, 37, 44 |
| McLaren, Mary (Movie Actress) | - | - | 0 |
| McLaughlin, Archie | | | 39 |
| McLaughlin, Patrick (Miner) | | | 24 |
| McLaury | | | 0 |
| McLaury, Robert Franklin "Frank" (T, Cowboy, Victim/OK Corral) | | 43 | 22, 31, 43, 48 |
| McLaury, Thomas Clark (T, Cowboy, Victim/OK Corral) | - | 43 | 22, 31, 43, 48 |
| McLeod, Raine William (Western Author) | - | - | 03 |
| McLintock (M) 1963 | - | - | 33, 50 |
| McMahan, John (Deputy ?) | - | - | 03 |
| McMains, O.P. (Revernd) [CCW] | - | - | 44 |
| McMasters, Sherman "Sherm" (T, Earp Faction) | - | - | 12 |
| McMullen, H.C. (RR Livestock Agent) | | | 35 |
| McNab, Frank | - | 18 | 10, 18 |
| McNear, Harley (Radio Actor) | - | - | 17 |
| McNeil, Red (AZ, Outlaw/Poet) | | | 22 |
| McNew, Bill | - | - | 07 |
| McQueen, Steve (Movie Star) | - | - | 06 |
| McRose, Martin | - | 25 | 25 |
| McShane, Ian (TV Actor) Deadwood | - | - | 12 |
| McSween, Alexander (LCW, Victim) | - | 29 | 01, 19, 28, 29, 51 |
| McSween, Susan Ellen (Baker, Barber) | - | 1 | 01 |
| Meacham, Alfred B. (Chairman, Modoc Peace Commission 1873) | | | 15 |
| Mears, Otto (Colorado Railroad Pioneer) | | | 18, 25 |
| Medal of Freedom (U.S.) | | | 38 |
| Medal of Honor (TYH!) | | | 01, 02, 07, 11, 20, 22, 23, 29, 30, 37 |
| Meeker Massacre, The (CO) 1879 | - | - | 39, 42, 0 |
| Meeker, Ezra Manning (Pioneer, Farmer, Author, Historian) | 52 | 49 | 08, 49, 52 |
| Meeker, Josephine (Indian captive) | | | 42 |
| Meeker, Nathanial Cook (Reformer | | | 39 |
| Meeks, Henry Wilber "Bub" (WB) | - | 47 | 16, 33, 47 |
| Meek, Fielding Bradford (Geologist, Paleontologist) | | | 51 |
| Meek, Joseph L. (U.S. Marshal) | | | 22 |
| Melody Ranch (Radio Show) | - | - | 30, 0 |
| Memories of an Indian Boyhood (B | | | 02 |
| Menger Hotel (Amarillo, TX) | - | - | 13, 15 |
| Merril, Dave (Outlaw, Victim) | - | - | 23 |
| Merwin, Hulbert and Co. Arms (Revolvers) | | | 0 |
| Mesa Verde National Park (CO) | | | 51 |
| Mescalero Apache Indians | | | 10 |
| Meskwaki Indians (Fox) | | | 20 |
| Mesquiteer (FC's, Film Series) | | | 32 |
| Mexican Bend, Battle of (UT) | - | - | 13 |
| Mexican Expedition, The (U.S. Army) 1916-17 | | | 02, 06, 11 |
| Mexican Joe | - | - | 0 |
| Mexican Rurales | - | - | 11 |
| Mexican-American War, The (1847 to 1848) | - | - | 27, 37, 43 |
| Mexican-AmericanWar (1846-48) | | | 19 |
| Mexico | | | 17 |
| Meyers, Roland Charles | 24 | 42 | 43 |
| Mickey Mouse Club (TV Show) | - | - | 45 |
| Middaugh, W.H. (Marshal) | - | - | 40 |
| Middleton, John | - | - | 10, 13, 14 |
| Miles, Moses | - | - | 43, 44 |
| Miles, Nelson Appleton (Lt. General) U.S. Army | 32 | 20 | 02, 20, 32, 35, 38 |
| Mill Iron Ranch | - | - | 27 |
| Millain, John (Murderer) | | | 17 |
| Miller Brothers 101 Ranch | | | 40 |
| Miller Brothers 101 Ranch Real Wild West (1907) | - | - | 40, 0 |
| Miller, Broncho Charlie (Movie Star) | - | - | 03 |
| Miller, James B. "Killer Miller" "Killin' Jim" "Deacon" (Just what the names say...) | 43 | 16 | 09, 15, 16, 31, 33, 37, 43, 52 |
| Miller, Joe | - | - | 23 |
| Miller, Loraine (Movie Actress) | - | - | 0 |
| Million Dollar Highway (1883) | | | 25 |
| Mills, Samuel C. (Photographer) | | | 0 |
| Milner, Moses Embree "California Joe" (Outlaw) " | | | 44 |
| Milton, Jeff Davis (Lawman) | 45 | 19 | 07, 19, 20, 25, 44, 45 |
| Milton, Jefferson "Jeff" Davis Texas Ranger) | | | 45 |
| Mine Creek, Battle of | - | - | 43 |
| Miner's Angel, The (see: Nellie Cashman) | | | 13 |
| Minimic | - | - | 26 |
| Minnesota Raid, The (JYG) | | | 36, 42 |
| Minnesota Territory | | | 09, 19 |
| Minnesota, State of (1858) | | | 19 |
| Mirabel, Juan (Tapaiu, Red Dancer) [Taos Painter] | - | - | 04 |
| Miranda, Guadalupe (Mexican Beet Farmer) | - | - | 02, 06 |
| Miss Kitty (FC, TV) Gunsmoke | | | 17, 33, 37 |
| Missouri Compromise, The (U.S. Law) | - | - | 22 |
| Missouri Pacific RR | | | 32 |
| Missouri-Kansas-Texas Railroad | | | 18 |
| Missouri-Kansas-Texas Railroad (The "KATY") | 1870 | 1988 | 37 |
| Missourians, The (M) 1950 | - | - | 09 |
| Missouri, State of (24th State) "The Show Me State" | 1821/32 | - | 32 |
| Mitchell-Truitt Feud | | | 41 |
| Mitchell, Cooney (Mitchell-Truitt Feud)Fue | | | 41 |
| Mitchell, Frank (Movie Actor) | - | - | 0 |
| Mitchel, Daniel S. (Photographer) | | | 0 |
| Mitchum, Robert (Movie Star) | - | - | 36 |
| Mix, Tom (Thomas Hezikial) [MS] | 1 | 41 | 01, 21, 41, 42, 48 |
| MN - Battle of (The End) | | | 40 |
| Mochillla (Pony Express Mail Pouch) | - | - | 0 |
| Model Indian School, The (1904) | | | 22 |
| Modoc Indians (CA, OR & OK) | | | 15, 17, 19, 48, 49 |
| Modoc War, The | | | 03, 15, 16, 19, 40, 48, 49 |
| Monagram Picture | | | 45 |
| Monahseetah (Southern Cheyenne) Custer rape victim? | | | 48 |
| Monitor, The (Ironclad Stage Coach) | - | - | 39 |
| Monogram Pictures (Movie Studio) | | | 21, 23, 38 |
| Monroe, Bill (Country Musician) | | | 16 |
| Monroe, Felix (Pimp) | | | 04 |
| Montana Blizzard (Horse) | - | - | 27 |
| Montana Moon (M) 1930 | - | - | 46 |
| Montana, State of (41st State) "Big Sky Country" | 1889/45 | - | 09, 45 |
| Montana, Territory of | 1864/22 | 1889/45 | 01, 02, 05, 21, 22, 49 |
| Monte Montana (Cowboy | | | 20, 25 |
| Montgomery, Charlie | - | 33 | 33 |
| Montgomery, George (Movie Star) | - | - | 0 |
| Moon Riders, The (Movie | | | 01 |
| Moore) John J. (Reno Gang) | | | 30 |
| Moore, Clayton "The Lone Ranger "(TV Series) | 37 | 52 | 10, 36, 37, 52 |
| Moore, Della (see: Rogers, Annie) | | | 0 |
| Moore, Douglas (composer) | | | 10 |
| Moore, Morris (Deputy Sheriff) | - | - | 29 |
| Moore, Thomas | - | 36 | 36 |
| Moran, Thomas (Painter) | | | 07, 34, 51 |
| Morco, John "Happy Jack" | 36 | - | 36 |
| Moreno, Louis (Lynched) | | | 34 |
| Morgan, Harry (Movie/TV Actor) | | | 49 |
| Morgan, Lowell Dale (Historian) | 51 | 13 | 13, 51 |
| Mormon (an adhereent of the religion) | - | - | 08, 20, 22, 23, 24, 32, 33, 34, 35, 36, 37, 39, 42, 43, 44 |
| Mormon Church (see also: Church of Jesus Christ of Latter Day Saints) | - | - | 12, 13, 33, 40, 48 |
| Mormon Extermination Order, The (Missouri) | | | 43 |
| Mormon Hand Cart Company [10 in all] (see: Hand Cart Company # ??) | 1855 | 1860 | 0 |
| Mormon Militia (see: Nauvoo Legion) | | | 0 |
| Mormon Trail (1846-68) | | | 23, 39, 0 |
| Mormon War, The (Missouri - 1838) | | | 43 |
| Morrell | | | 02 |
| Morrison, Ed | - | - | 38 |
| Morrison, Ralph (Buffalo Hunter) Victim | | | 49 |
| Morrison, William V. (Investigator) | - | - | 12 |
| Morse, Harry Nicholson (Lawman, Detective) | 8 | 2 | 02, 08, 44 |
| Morse, Samuel (Co-Inventor of the Telegraph) | 1791 | 1872 | 21 |
| Mortensen, Viggo (Movie Actor) | | | 40 |
| Morton, William | - | 10 | 07, 10 |
| Moses (Mule) | | | 49 |
| Mosey, Phoebe Ann (see: Annie Oakley) | | | 0 |
| Mossman, Burton "Cap" (AZ Businessman, First Captain of the Arizona Rangers) | 18 | - | 18 |
| Mouache (see: Ute, Southern) | | | 52, 0 |
| Mountain Meadows Massacre, The (1857) | - | - | 10, 12, 29, 37 |
| Mountain Men, The (M) 1980 | - | - | 25 |
| Mouseketeer (they're still out there...) | - | - | 45 |
| Movie and TV Star) | | | 52 |
| Movie Star Locomotive, The (see: Sierra No.3) | | | 27 |
| Movies | | | 01 |
| Moving River Woman (Sioux Woman Warrior) | | | 26 |
| Moving Robe (Sioux Woman Warrior) | | | 26 |
| Mow-Way (Kotsoteka Comanche Chief) | | | 39 |
| Mr. Ed (TV Show) 1961 | - | - | 43 |
| Mrs. Maurice (see: Bullion, Laura) | | | 0 |
| Mt. Sopris (CO) | | | 30 |
| Muck, a, Muck (Short Story) | - | - | 18 |
| Mulford, Clarence E. (Western Author) | 5 | 19 | 05 |
| Mulhall, Lucille (Wild West Performer) | - | - | 0 |
| Mulhall, Zack (Wild West Performer) | - | - | 0 |
| Mullet Slough Tragedy | | | 43 |
| Mulvey, Bill (dumb drunk) | | | 35 |
| murderer) | | | 17 |
| Murders at Moondance (Novel) 1943 | | | 17 |
| Murieta, Joaquin (Mexican Bandit, CA) 1850's | | | 0 |
| Murphy & Dolan Mercantile & Banking (LCW) | | | 07 |
| Murphy Wagons | | | 0 |
| Murphy , Jim | - | - | 29 |
| Murphy/Dolan Faction (LCW) | - | - | 17, 20, 25, 28, 29, 33 |
| Murphy, Audie (MS) [Medal of Honor] TYH! | 25 | 22 | 11, 22, 25, 43, 52 |
| Murphy, Horace (Movie Actor) | - | - | 0 |
| Murphy, Lawrence (LCW) | - | - | 0 |
| Murphy, Mary | - | - | 0 |
| Murphy, Michael Martin (Singer, Movie Star) | - | - | 0 |
| Musgrave, George (HFG) | | | 32 |
| Musgrove, L.H. (Swinger) | - | - | 47 |
| Mussel Slough Tradgedy (Shootout) [CA] | - | - | 19 |
| Mustang (feral horse) Equus ferus caballus | | | 51 |
| Mustang (M) 1976 | - | - | 42 |
| Musttangs, The (1952) | | | 38 |
| Muybridge, Eadweard James (Pioneer Photographer) | 15 | 19 | 15, 19 |
| My Darling Clementine (M) 1946 | - | - | 04, 32, 35, 38 |
| My Old Kentucky Home (Stephen Foster song) | | | 02 |
| Myers and Leonard's Store (Adobe Walls, TX) | | | 26 |
| Myers, John Meyers (Writer) Fiction | | | 02 |
