Dakota – Marion Merrill (daughter of S.S. Merrill, railroad official) Marion, Texas – Marion Dove (granddaughter of Joshua W. Young, owner of a plantation that the Galveston, Harrisburg and San Antonio Railway passed through) Marion County – General Francis Marion of South Carolina, guerilla fighter and hero of the American Revolutionary War, 17 places in Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Mississippi, Ohio, Oregon, South Carolina, Tennessee, Texas, and West Virginia Marionville, Missouri – Gen. Francis Marion Marklee Village, California – Jacob Marklee (early settler) Markleeville, California – Jacob Marklee (early settler) Marlboro, Vermont – John Churchill, Duke of Marlborough Marlborough, Massachusetts and Marlborough, New York – John Churchill, Duke of Marlborough Marlborough, New Hampshire – John Churchill, Duke of Marlborough (indirectly, via Marlborough, Massachusetts) Marquam, Oregon – Philip Augustus Marquam (resident of Portland) Marquette – Jacques Marquette (French missionary and explorer), 8 places in 7 states: Marquette Heights, Illinois - Marquette, Iowa - Marquette, Kansas - Marquette, Michigan - Marquette County, Michigan - Marquette Island, an island in Michigan - Pere Marquette River, a river in Michigan - Lake Marquette, a lake in Minnesota - Marquette, Nebraska - Marquette (town), Wisconsin - Marquette County, Wisconsin Marsh Creek Springs, California – John Marsh Marshall, Colorado – Joseph M. Marshall (coal miner) Marshall, Minnesota – Gov. William Rainey Marshall Marshall, Texas – John Marshall Marshallton, Delaware – John Marshall (mill owner) Marshfield, Vermont – Capt. Isaac Marsh (landowner) Martensdale, California – Harry J. Marten (founder) Martin County, Florida – John W. Martin 24th Governor of Florida Martinez, California – Don Ygnacio Martínez Martinsburg, Nebraska – Jonathan Martin (settler) Martinsburg, West Virginia – Col. Thomas Bryan Martin (landowner) Martins Ferry, California – John F. Martin (first postmaster and ferry operator) Martin's Location, New Hampshire – Thomas Martin (grantee) Martinsville, Indiana – John Martin (commissioner) Maryland – Queen Henrietta Maria of France Maryland, New York – Queen Henrietta Maria of France (indirectly, via the state of Maryland) Marysville, California – Mary Murphy Covillaud (Donner Party survivor) Marysville, Kansas – Mary Marshall (wife of Francis J. Marshall, namesake of Marshall County) Maryville, Missouri – Mary Graham (wife of Amos Graham, county clerk) Masaryktown, Florida – Tomáš Garrigue Masaryk (Czechoslovak President) Mason, Illinois – Roswell B. Mason (railroader) Mason, New Hampshire – Captain John Mason (New Hampshire's founder) Masonville, New York – Rev. John M. Mason (landholder) Massena, New York – André